I was her Brother, so I was sympathetic to her needs, but I still said no, and as firmly as I could manage. However, she refused to take that as an answer. Then, after a few more minutes of a conversation that I didn't want to have, she got me to say, "I'll think about it."
My Sister is the clever one, the brains of the family, so she left it at that. She knew that to go all out for a win by getting a yes would be too much. She was happy for now with what she'd got from me. But I knew that this wasn't the end of it.
When Amy got home I was still thinking about it.
After a sloppy kiss on the lips, that was tender rather than passionate, she said, "From the look on your face I'm guessing that Jess has asked you."
I was surprised that she knew, but I shouldn't have been. The two of them were as thick as thieves.
"Did you say yes?"
I shook my head, and then I said, "I told her that I'd think about it."
That had been good enough for my Sister, but not for her. I was now seeing her angry face, and it was not a pretty sight.
With her hands on her hips, and a menacing stare, I got from her, "She desperately needs your help, and you said no."
I opened my mouth to correct her. It hadn't been no, I was going to think about it, but I had the good sense to close it without saying anything. From experience, I'd learnt that when she's like this, it's best to say as little as possible. Without any provocation from me, she'll eventually calm down.
But I was wrong, because that didn't happen!
It was relentless, and I had to go to our bedroom to get away from her. However, I knew that I would only get a few minutes of peace, because very soon she would be joining me.
As I lay on the bed, I wondered if Amy was right. Was I being unreasonable? It didn't take me long to come up with the answer. Definitely not. What my Sister wanted from me wasn't trivial. It was something that was very important, and it had long-term consequences for both of us.
She wanted me to be the Father of her baby!
After trying unsuccessfully for more than two years they'd had some tests done. Cody, her partner, was the problem. He had a low sperm count. It was still possible that my Sister could conceive, but it was unlikely. IVF wasn't an option because of the cost. That's why, in desperation, Jess had come to me. And I'd rejected her. I didn't feel good about it, but I was convinced that it was the right thing to do.
When I heard Amy's footsteps outside the door, I braced myself. The tongue-lashing was going to continue. As she entered the room, I told myself to stay calm. However, surprisingly, she was smiling, and in her hand was a mug. I could see the steam coming from it.
"I made you a coffee. Piping hot, just as you like it."
I took it from her, and then I looked at it. That amused her.
"Don't worry, it's not poisoned. I made it for you because I love you. If I wanted to kill you it wouldn't be with poison, it would be with a knife that went straight through your heart."
That got a wry smile from me. I then sipped it. It was just how I liked it.
"Thanks, it's perfect."
"Good, now can we talk some more about what Jess wants."
I nodded, but I needed to be careful. It was easier to resist when she was angry. With her being so nice to me, I might be persuaded to say yes.
While she talked, she made it sound logical, as if it was the correct thing to do. Her reasoning was very effective, and my resistance was starting to crumble. However, I still wasn't giving in.
Then, what had been a fair fight, changed. She decided to play dirty!
When her hand was on my trousers, unzipping it, I knew that I should stop her, but I didn't. I was weak-willed. As she pulled my cock out, it was already expanding.
After a few quick strokes, that got it standing proud, she said, "Let's see if I can get you to change your mind. I'm sure that I can."
I shook my head. I was determined to stay strong, but it was going to be difficult, perhaps even impossible.
When her hand stopped I was relieved, but only briefly, because this wasn't the end of it. Her head was now close to my cock, and her tongue was teasing the tip of it. It was highly erotic.
"If you agree to help Jess then I'll put it in my mouth."
That got my heart racing. We'd been together for a long time, but that would be a first. She was adventurous in the bedroom, willing to do anything, except for that. It was something I liked, and my other girlfriends hadn't just done it, they'd enjoyed doing it. In the past I'd even begged her to do it, but it had always been a no. And now, after I'd given up hope of it ever happening, she was offering it to me.
However, it came with a heavy price, and it was one that I wasn't willing to pay.
Before I could change my mind, I quickly said, "It's still a no."
"I'll do it slowly, taking in as much of your cock as I can manage."
She was now torturing me.
"If you want me to, I'll even let you come in my mouth."
I couldn't help it, I groaned, and that made her laugh. Of course I wanted to empty my balls into her sweet mouth. It was number one on my wish-list.
"And I'll swallow all of your cum."
After hearing that, better men that me might have been able to still hold out, but I couldn't. When I said OK, she had the good sense not to gloat, because that would have annoyed me.
For somebody who doesn't like doing this, she was surprisingly good at it. And, as promised, she wasn't in a hurry to make me come. Her bobbing head was slowly taking me towards a climax, and I knew that it would be a big one. If I was to close my eyes, then I could believe that my cock was actually in a hot wet pussy rather than being pleasured by a mouth. I needed to savour it, because it was unlikely that she would ever do it again for me.
Now, because she'd speeded up, my excitement had gone up a level. My balls were tightening and I could feel the sap rising. Very soon she would make me come. I should warn her.
"I'm almost there."
Seconds later, I was on the edge, ready to topple over. That's when she slowed down, almost stopping. I was desperate to come. Had she changed her mind, was coming in her mouth too much for her?
I shouted out, "Finish me off."
One swift bob of her head did the trick. I was now spurting bucket loads of hot cum deep into her mouth, and she was swallowing it.
Was it good? You bet it was! I lost count of the number of times that I spurted. Definitely one of my best. I couldn't stop smiling. But when she returned from the bathroom, and she spoke, my smile disappeared.
"Don't forget, we have a deal."
It wasn't long before she was asleep, but I was wide awake. I had a lot to think about.
I was up first. While I was making breakfast Amy joined me, and I could tell that she was in a good mood.
"After I've eaten I'm going to call your Sister."
She did, from the dining room while I cleaned the kitchen. I couldn't hear their conversation, but I did hear a lot of laughing from Amy. When she returned she was excited.
"Jess will be here tomorrow at eight."
I then got a detailed lecture on what was the best time for a woman to conceive. I wasn't really listening, but I did when she told me how many times I would have to jerk off for my Sister.
"She needs sperm tomorrow, and then for the next five days."
The first time was a bit awkward, embarrassing for both of us, even though we did what we had to do in separate rooms.
When I'd finished I called Amy, and she came in to take the container from me. How it got into my Sister, I didn't want to know, but it didn't take long.
"Jess is resting with her feet high up so that your little tadpoles can swim towards her egg."
That was more detail than I needed from her. Jess left at nine, and I got a big hug from her.
"Thanks, this means a lot to me."
After that it became routine, done quickly and efficiently. By day six, the hugs had ended, and the thanks was said without any real enthusiasm.
Amy gave me a day to recover, and then she wanted sex. I would have preferred to wait another day, but that wasn't an option.
"I need your big cock deep up my little pussy."
And I need a rest!
There was no point in arguing with her. I had to perform, to her satisfaction, or I was a dead man.
I started by groping her big breasts, hoping that it would put some life into my cock. It did, but there was still a long way to go before it would be firm enough to fuck. I needed to finger her juicy pussy. If that didn't get me excited then nothing would.
When my hand went between her legs, she spread them, to make it easier for me to get to her pussy. As soon as I got to it, I quickly pushed two fingers deep into her. It made her gasp.
"Fuck, my cunt loves that."
And I love it when she talks dirty. Now my cock was at its best, and I was as eager as she was to fuck. As I probed her pussy with my fingers it made her squirm.
"I can make you come with my fingers, or do you want my cock?"
It was a silly question and it made her laugh. She was still laughing when I pushed the head of my cock into her.
Sometimes our lovemaking is slow and gentle. Tender rather than passionate. But not today. As soon as I was in her I was fucking her hard. And it was what both of us wanted.
We lasted a minute, but only just. She got there first, and I wasn't far behind. It had been brief, however, it had also been wonderful, and it had exhausted both of us. Soon after we fell asleep while we were cuddling each other.
As the days past, and it got nearer to the time that Jess's period was due to start, both of them got excited. Amy was convinced that my Sister was pregnant.
"We need to think about names for the baby."
Jess agreed with her, and for the next hour that was all they talked about. I kept out of it because I didn't share their optimism. I had a feeling that it would all end in tears.
It did, and I, without any good reason, was blamed for it!
"Next time you need to do better. And I know how you can do that."
Amy then explained it to me. It made sense, but I wasn't happy with it. She wanted me to refrain from having sex for a week before giving Jess the first load. That would increase my sperm count, and therefore make it more likely that my Sister would become pregnant.
For the next four months I did that, but without any success. It had become an ordeal and I was dreading the next attempt. But before that started, Amy had some good news for me.
"It's not working. We're going to stop."