Lisa is 18, small (5 feet tall exactly), thin, somehow manages to have large breasts. Not just proportionately large either.
Lisa is the ex-girlfriend of a friend of mine. We've known each other for coming up to a year now. She and I caused quite a bit of trouble for ourselves by getting together not-so-discreetly the third time we met each other. After all the trouble we caused we completely stopped talking to each other for about 7 months. A few weeks ago, while I was still in a relationship, I got a few messages from Lisa asking if I wanted to go out or a drink so she could pay me back a tiny amount of money she owed me that I'd completely forgotten about. To save myself a lot of problems I turned her down and thought no more of it.
When I became single again I thought "why not?" I sent her a message one night saying it was nothing personal, and that she doesn't have to worry about paying me back at all. I heard nothing from her for a few days, so I forgot about it. I was talking on the phone one night when I got an IM from Lisa. We had a bit of a chat, and then arranged to meet up for a drink after my driving lesson (Wednesday seems to be a lucky day for me).
My driving instructor cancelled my lesson because he was ill, so Lisa and I met up a little earlier than planned. Within 15 minutes of being in the pub I knew what was going to happen. I knew why we were both there. We had a nice time catching up and stuff, but there was a lot of things being said non-verbally. We both had quite a bit to drink that night, and when the pub closed I said she was more than welcome to come back to my house and stay if she wanted.
As we were walking through the car park I stepped in front of her and held her hands in an incredibly uncharacteristically forward manner. I went to kiss her and to my confusion she backed away. I was kinda upset by this, of course, but then she said "not yet" which is a lot better to hear than "what the hell do you think you're doing? RAPE RAPE!!" Or so I'd imagine. 
We had a bit more of a chat on our walk back to my house, and it was quite pleasant. When we got back we sat around in my bedroom for a little while (it's where my computer, movies, music, etc. are) and before too long we were kissing on my bed. Since the last time I'd seen her she got her nose and lip pierced. I'd never kissed anyone with a lip piercing before that point. It was interesting. Not bad, not fantastic, just a bit different. It was fun to play with while kissing.
We'd been kissing and moving our hands all over for a couple of minutes when she told me she wouldn't be able to have sex because it was the exact wrong time of the month for such activities. I was disappointed, but that's the way she wanted it. Before too long clothes were coming off us both, except for her jeans and knickers. She refused to take them off, or let me do anything underneath them, so I was a bit limited.
After a lot of kissing, licking, and some gentle biting we were both ridiculously horny. I still had my jeans and boxers on at this point and I was lying on top of her. I realised that at some point I'd started moving as if we were having sex. Now, this is an important part, so listen carefully (guys especially). When this happens, as it has a habit of doing, it's important that you don't think about it too much. If you do then you'll realise how stupid you probably look, and then you'll stop awkwardly and get yourself in trouble.
Just rely on the fact that if you've been paying attention you'll know she's hopefully enjoying it too, and continue.
Lisa was enjoying herself a lot. She'd remembered that I'd mentioned the scratches I got from Valerie and decided she wanted to give that a try. She was a lot more nervous about it than Valerie and she kept stopping to ask if it hurt too much. It was very cute that she cared so much, but I told her that I'd let her know if it hurt too much. She carried on after that and definitely enjoyed herself a lot more when she wasn't so worried. I didn't get any actual cuts this time though, and that's probably a good thing because she was scratching everywhere and I'm sure they'd be spotted more easily than the last set.
Before too long I had no clothes on and Lisa was quick to start playing with her hands. I was on my knees over her when I moved forwards a bit and she looked back up at my face. I moved forward a bit more and she re-positioned her head. Half a second later I was staring up at the ceiling as happy as can be with Lisa giving me head. She carried on for a couple of minutes and then decided to change position. Earlier in the night she'd asked me if I'd ever tied anyone up, or been tied up, or used blindfolds because she was very curious about it. I said I'd done all of that before and that it was definitely worth experiencing. Lisa decided tonight was her night to be on the non-blinfolded non-tied-up end of the experience.
I was a bit nervous letting her tie me up and blindfold me with some of my work ties, because I hadn't spoken to her for 7 months, but I gave in eventually. My hands were both tied to my bed above my head and I could just see a little bit underneath the tie over my eyes. Lisa knelt down between my legs and carried on where she'd left off licking up and down, sucking, and then using her hand. This carried on for a really long time. I can stop myself from getting too close quite easily, especially when a girl keeps changing what she's doing every minute or two. So I just kept watching and enjoying until my hands were pretty numb and then moved around a bit and she asked if I wanted to be untied. I said that I did and I think she was relieved that she could stop for a minute to do it.
Once I was untied and sighted again Lisa was lying on her back. I knelt over her about half way down her body, kissed her a couple of times, and she had already started using her hand again. I knelt up straight again and she carried on with her hand, so I played with her nipples for a while, then moved my hand back and started touching her through her jeans. It was nice to hear her moaning from just that, and I really wanted to do a lot more, but she wouldn't have wanted that, so I carried on. Before too long I was moving my hand a lot faster, pressing a lot harder, and she was moaning more, and losing track of what she was doing with her hand. She would move really quickly for a couple of seconds and then kinda get lost in the moment and almost completely stop.
I slowed down a bit myself and she carried on what she was doing. Just as I was getting to the best part she half-stopped. I told her to carry on for just a few more seconds and she started moving her hand furiously. It felt absolutely amazing after all the time spent building up to it. A few seconds later I looked back down at Lisa seeing her still pulling gently--which felt really good--smiling up at me.
I grabbed her something she could clean herself up with. I don't think she was expecting quite as much as she got, to be honest, or for it to go all the places it did. After a minute she had cleaned up enough to get up and go to the bathroom to clean herself properly. I pretty much collapsed on my bed, exhausted, and waited for her to come back.
When she got back we spoke a little bit and then decided that 02:30 was definitely a good time to try to get some sleep before work in the morning, and that was that.
Looking back at it now, I think the whole thing must have lasted a couple of hours, which isn't bad at all. I'm glad it was Lisa doing the majority of everything for that time (so selfish!), and I'm impressed that she managed it, to be honest. She did say it had been about 6 months since her last time though, so I guess she was just making up for lost time. Glad I could help.