I could really use some advice on this one because I have no idea how its going to play out. Recently, was my best female friend's birthday and we went out drinking to celebrate. Now I can't really describe how close I am to this woman, but its pretty much as close as I can imagine being to anyone in terms of friendship. Anyway, after her party thing, I was walking her home and she suggested that I just spend the night because her place is way closer than mine. This isn't unusual as she's spent the night with me before, without there being any kind of sexual tension or advances from either of us. Speaking of which, our relationship has never been sexually charged whatsoever. I know she's an attractive girl but she's always been out of the question because when we started to become friends she was the girlfriend of a friend of mine, and since then we've been too close. So I went home with her and we got changed for bed then proceeded to talk about random stuff for like 2 hours. Finally at like 3:30 in the morning she decided it was time to go to sleep. We jump in her bed and kinda snuggle up with each other. I doze off only for her to wake up like 5 minutes later asking me about a birthday present that I was supposed to give her from a mutual friend. The gift itself was a complete joke, this friend had coerced me into giving the girl that I'd gone home with a kiss as a present from her. I decided that as we were both somewhat intoxicated and in bed together kissing her probably wasn't the best idea, but she refused to go back to sleep unless I gave her "her present". So I kissed her, pretty much like a person would kiss a family member. After about a 20 second awkward silence we were all over each other. We ended up doing pretty much everything but sexual intercourse (I didn't plan on needing a condom this particular night). She even stopped and asked me in the middle if I thought it would be awkward the next day, which of course I answered no too. So the morning came and it was awkward, though not horribly. Actually I was surprised it wasn't way worse. But as it turned out because yesterday was a holiday I ended up spending most of it with her and other friends, including a good friend of both of ours who I was getting pretty serious with before we decided to slow down a few months ago. That was really awkward as these two are like childhood friends. Also it was just kinda weird, she acted both closer to me and more distant and is nothing I can really put my finger on. In fact, its most likely a combination of what is really happening and my own paranoia. I've slept/messed around/hookedup with friends before but not friends that are nearly this close. So I guess after all that background, I want to ask, what should I do to not fuck up my friendship with her? There's a possibility that I'm worrying about nothing and we'll both be "adult" enough to not take it seriously but my life usually doesn't work out like that. I know the most obvious advice would be that if it gets weird to talk to her about it, and I will. The main reason I'm posting this is because I'm sure many of you have been in very similar situations and I would love any advice that you have on the matter. Sorry for the long post but some sound advice would really put my mind at ease on this one, because unlike many of the women I end up messing around with she's a lot more important to me than just "some other girl".