This thread reminds me of a story. A few years ago I met this chick via... we'll say Yahoo personals I can't remember exactly but that's probably where I met her. Anyway she lived up in PA but not too far over the border from MD so I use to drive up to hang out with her and her sun and watch uh... what show was it... Charmed I think... she was really in to that show. Anyway nothing ever happened we would watch Charmed hang out and that would be about it. The usual story she just got out of a bad relationship and was just looking for a friend. No biggie I wasn't hard up for a sex partner at that point and if I was I had other options. I did think she was cool and was interested in a relationship but I wasn't going to push it.
Anyway between visit we would frequently chat on Yahoo IM. So one night out of the blue(and it's pretty late) she IM's me. She's like hey what are you doing. I'm like just hanging out. So then she goes something to the effect of I'm really horny right now and need some sex... and I'm like uh... ok... and she's like I want you. I'm like.. ok this is a joke.. real funny... haha... She's like well if you aren't going to take me seriously forget it. Ok so at this point I'm like whoa... Darien generally does not turn down sex offers! So I hopped in my car, got up there in record time and did the deed. She had an awesome tattoo on her back BTW.
So what happens a few days later? Regret sets in. She's not IMing me as much. When I finally talk to her about it, she's feeling bad about it... she doesn't have any real feelings beyond friendship for me, she feels like sex may have screwed things up, because she knew I was interested in a relationship she didn't want me to feel like she was to just because we slept together, etc... blah, blah, blah. And so we eventually drifted apart and stopped talking.
For a bit I felt like it was pretty f*cked up. But you know in the end I felt like if she was a true friend it wouldn't have mattered. In my high school/early college years I had another friend that we use to sleep together infrequently, but it never interfered with our friendship, so it really can go either way.