I matured kind of late physically, and was very shy, so even toward the end of high school with my 18th birthday behind me I had not yet managed to lose my virginity. I had gone out with girls a few times, and even had a couple of girlfriends that I had made out with, and felt up (as much as they would let me), but had never even gotten to touch a bare pussy much less get to penetrate one.
I got a really unexpected lesson one summer day. My best friend, Doug - who I had known since the very beginning of school - and I spent a lots of time at each other's house. Doug had a sister, Linda, who was much older (maybe by 10 years). In spite of the age difference she and Doug were very close, and from things Doug said she liked to teach him the ways of the world. When we were little I remember seeing her sometimes since we spent a lot of time at each other's house. There wasn't too much interaction with her, but she was always friendly. By the time we were out of elementary school she had gone off to college, then got a job in another city so didn't see her as often. This particular summer her job had her in a temporary assignment back in the city where we lived, and so she was living an empty bedroom in her parent's home. I had seen and talked to her briefly a couple of times when I had gone over to Doug's.
That particular day I had gone to Doug's house in the morning, and we had started playing a military battle board game (which often took all day to complete). He had told me he had a doctor's checkup at 11, then he and his mother were going to get lunch with his father downtown. Not surprisingly we were still mid-game when his mother came in and said it was time to go. We carefully set aside the game pieces, and agreed to meet later to finish. Doug and his mother were a little late, and in a rush to get out of the house.
I wanted to get a drink of water before biking home, and headed toward the kitchen. Doug's mother called out as she went out the door, "Linda's home today, so don't worry about locking the door when you leave." pulling the door closed behind her.
As I finished my glass of water Linda wandered into the kitchen, grabbed a coffee cup and filled it from a thermos on the counter. She added milk and sipped, letting out a soft "Ahhhh" as she did. "I really need coffee to get going in the morning." she sighed.
I stood looking at her, probably eyes wide and chin dropped. She was wearing a very short silky robe that ended just a little way down her thighs. The material conformed to her body and it was pretty obvious that she didn't have a bra on underneath it, I could clearly see her nipples protruding and could see nothing but skin in the V where it opened at the top.
She gave me a funny smile, and said "You and Dougie have grown up so much." Then motioned, and added "Come over to my room for a minute, I need a smoke and I can't do it out here."
I knew she smoked cigarettes, but that her parents were against her smoking. I followed her toward her room, my eyes fastened on her lovely ass moving under the robe which barely covered it. As I went into the room she closed the door behind me, and leaned over to reach into her bag on the floor with her back to me and as she did the robe slid up until it was very clear that she did not have even panties on under the robe. There was an immediate swelling in my groin in response, causing a bulge in my shorts. Linda had taken out her cigarette, lit it and took a deep drag. I remember Doug saying she had 'taught' him to smoke, and after taking another drag held the cigarette out to me. I accepted it and also took a deep drag, then blew out a stream of smoke. She smiled at me as I held it out to return it to her. She sat down on a chair next to her unmade bed and finished the cigarette before crushing the butt out and leaving it in the ashtray.
She looked over at me again. "Do you have a girlfriend now?" she asked out of the blue, then took another swallow of coffee.
I stammered a bit before answering "Not right now, but I have had a couple."
Doug and I talked about girls pretty often, and I knew he was way more experienced than me, or at least he claimed to be. My shyness held me back from asking girls to go out.
"Dougie thinks you're still a virgin, is that true?" Linda asked.
I'm sure I blushed furiously, and sort of hung my head down as I answered "Yeah, it's true. I've gone out with a couple girls but they haven't wanted to go all the way."
"I guess you aren't choosing the right ones then" Linda replied. "You DO like girls don't you?"
"Yeah, I like girls but I get really shy about asking them out. And when I touch them they seem to like it but stop me before we get very far."
"Maybe you just need more confidence." she said. She gave me a long look up and down, then added "I think you just need some lessons." As she said this she parted her legs slightly, and sitting on the bed as she was, exposed her pussy to me.
The swelling and bulge that had started from looking at her body through the robe was by then a full-blown erection and she could probably tell that she was having the effect on me she probably intended.
"Are you up for a lesson now?" she asked.
I just nodded my head.
"I think this might be a good time for it." Linda said softly. Then "This is just a lesson about sex, ok? This does not mean I love you, or that there will ever be another session between us. And I will tell you now sex with someone you love is even better, but "just sex" can be very good."
I lamely nodded again.
"When I ask you questions you have to answer me completely and honestly. If you don't I will be able to tell, and the lesson will end right then."
Another nod.