Sorry it has been so long since the first 2 chapters. Please read those to understand the background.
I was confused after that Sunday in the park with Courtney. It was incredible and was the most intense sex I had ever had. Did I feel guilty? Yes. Was that going to stop me? Probably not. I don't think Courtney would have let me even if I wanted to stop.
The problem now was finding any time to be alone with Lily's little sister. I was busy with work and Courtney with university. Any time I did have off I spent with Lily. I think I did a pretty good job of pretending that everything was normal between us.
A week after that incident with Courtney, I was sitting around the dinner table with Lily, Courtney and their parents. Her mum is an incredible cook. I don't know where she finds the time, she's a hard working professional at a local law firm but still finds time to take care of her family, even if they are adults now.
"I got us both off work next weekend Dane," said Lily.
"Huh, why?" I asked confused.
"Pay up," Lily said to her stepdad holding out her hand. He fished out a $20 note and passed it to her.
"Way to go genius, you cost me 20 bucks," said Lily's stepdad Brian.
"I told you to stop betting with your daughters," their mum said as she whacked her husband.
I was still confused, "um sorry, I guess."
"You still have no clue do you?" asked Lily.
The look on my face made all 4 of them laugh before Lily rescued me. "It's our family reunion next weekend, we talked about it a couple of days ago, I can't believe you still forgot. You've been weird the last week or so."
I tried not to look too guilty and made a point not to look in the direction of Courtney, I hoped she was clever enough to do the same.
"Yeah I've noticed it too," added Courtney. "What's wrong?"
"What would you know, I haven't seen you since last Sunday," I said before thinking.
"You saw each other on Sunday?" asked Lily.
"Yeah I saw doofus in the park when I went to see Shelley," said Courtney. Man I was glad that she's quick at coming up with lies.
I decided to quickly change the subject. "This is the one in Canberra right? I thought that was next month."
"You're hopeless with dates, that's why I organised us the weekend off work."
"If he's hopeless on dates how did he get you?" asked Courtney.
"Lets just say he's lucky he's cute."
"Hey! What's this, pick on Dane day? If this is what all next weekend is going to be like then I'm not going."
"Aw did the little girls hurt your feelings? You poor baby." asked Courtney in a mocking tone.
I didn't respond I just poked my tongue out at her.
"All right you two, grow up," Lily's mum added.
The rest of the dinner went on fairly normally. It was quite normal for Courtney to be a little flirtatious with me, even in front of her parents. I didn't think anything was out of the ordinary until I was alone with Lily. We were sitting in a small ice-cream shop down the road from her house when she said, "I'm worried that Courtney has a thing for you."
"Don't be silly, you know what she's like. She's been the same since we first started dating." I really wanted to change the situation but Lily continued.
"You didn't notice the way she was looking at you tonight?"
I was purposely not looking in her direction if I could avoid it. "No, not particularly."
"Maybe I'm crazy but she has brought you up a lot this week."
"How so?" I almost kicked myself that I asked that, I didn't want to continue talking about this.
"Asking about when I was seeing you, when you were coming around again, how often we worked on the same nights."
"Hmm," Courtney was being stupid talking about me, did she want to get caught.
"That's all? Hmm?"
"Well it seems harmless enough."
"What about 2 nights ago when she asked if we've had sex yet?"
"What? That's a bit private, what did you say?"
"Well..."
"You talk about our sex life with Courtney? No wonder you think she has a thing for me. She knows how much of a stud I am." I figured that I would try and play down the situation. Make a joke of it. I was scared I would say something that would screw everything up.
"She's my sister. We talk about things. She doesn't know all the details and stuff, just that we haven't actually done the whole business yet."
"Oh, I still don't know what I think of that."
"Well I'll tell you that she's a virgin, hasn't done anything but kiss a boy yet. But I have a feeling when she starts she will turn into a massive slut."
"Lily! That's not very sisterly," I said but I was thinking the exact same thing. Only she was already turning into that but only with me.
We continued our ice-cream and talked, not much more about Courtney but I was worried about what she might try and do at her family reunion next week. When we were done and we walked back to her place instead of going inside she grabbed me and pushed me towards my car.
"Let's get in back," she said.
My car is not huge but there is enough room in the backseat to have a little fun. We were parked outside her parents' house on the street, but being dark we did have enough privacy, unless somebody came right up to the window.
We got inside and in an instant Lily had my pants off and took my cock in her mouth. Lily is a fantastic cocksucker and is able to almost deep throat me. The feeling was incredible as I hadn't had any release in around 48 hours. I knew I wouldn't last long but I wanted to enjoy it.
My back was up against the window facing the road and Lily on her knees on the seat with her ass raised to the window facing her house. It was dark in the car but there was enough light to see Lily's mouth wrapped around my cock, her head going up and down slowly. She sucked on the head of my cock, running her tongue slowly around the tip before quickly impaling herself on its entire length. She kept doing this repeatedly for a long time, willing myself to hold out longer.
I closed my eyes enjoying the sensation ready to blow my load. She doesn't like me to warn her when I'm about to blow, she says she likes to be surprised but can usually tell by the way my body reacts. Today was no different. As I released a torrent of cum into my girlfriend's mouth I opened my eyes to enjoy watching her milk the last of it out of my cock. But as I opened them I was looking into the eyes of her little sister looking through the window with a huge smile on her face.
I needed to remain calm and not let Lily know something was wrong. As she released my cock from her mouth she raised her head, looked me in the eyes while licking her lips and opened her mouth to show me that nothing was left inside. She slid into my lap and kissed me. I opened my mouth to let her tongue in and we kissed passionately. I could taste a hint of my cum still in her mouth but I didn't care. I knew that Courtney was still outside watching us.
As we broke the kiss I assumed she wanted me to return the favour but instead she told me to put on my pants and she returned inside saying she was busy tomorrow and it was already late.
Before driving home I quickly sent Courtney a message. "That was dumb, tell me you didn't get caught." Then I drove the short distance to where I lived before she replied.
"Nah she didn't see me. That was hot. Wish it was me in the car with you though. Why didn't you lick her? I wanted to see that."
So I just figured out something else about Courtney, she is into voyeurism too. I knew I was about to get into another message session with Courtney, we've had a few of these over the week, they usually end in me having a wank. She even sent a few pictures to help me.
Me.
"So you like watching too? You do realise that was your sister you wanted to see?"
Court:
"Yeah, so? She's hot, bet she tastes great."
Me:
"You into all girls or just your sister?"
Court:
"Never been with a girl but I want to try it. Just another thing I wanna do."
Me:
"That's hot but that's one thing I can't help you with sorry. If you had the chance would you lick Lily?"
Court:
"I don't know. I've thought about it. But she'd never go for it anyway. Back to you and me, I'm going to fuck you next weekend."
Oh no, I should've realised that Courtney would want to fool around there. What was I going to do? We would get caught by someone in her family. There was going to be nearly 50 people at this event. Most of them would be staying with us at Lily's uncle's place, it's apparently huge.
Me:
"That would be extremely risky, I don't think we will have time alone."
Court:
"You'll make some time."