I made a big mistake, and I need some advice. Heres the story: This past weekend two of my friends and I went to the beach for a few days. One of them has family up there, but they were out of town, so that is where we stayed. We were all enjoying ourselves and having a good time. On Saturday night we had a few more people come over and had a little party. It was nothing out of control but a few people were drinking a little bit too heavily. Well, flash forward to everyone being in bed: my friend comes into my room and lies down in the bed and is being very forward. I dont really recall how it happened but all of a sudden we were making out. I stopped her, and asked What are we doing? This isnt right. She then went on to explain that shes really liked me for over a year, and that she has no idea how I didnt pick up on it. She said that everyone else knew about it, but told her not to bother. She also revealed that her thing for me is the reason why nothing happened between me and these two other girls that I had liked at some point through out the past year (theyre all really close friends and I guess could not do that to her). Anyways, shes telling me all of this stuff, and instead of just being honest and saying I didnt feel the same way I just kept listening and in a way leading her on. To make matters more complicated our other friend on the trip liked her for the past year, but she never liked him, and he is in the next room. After she told me all of this she started kissing me again, and I didnt stop her. One thing lead to another, before I knew it we had our clothes off, and all of a sudden we were about to have sex (not important but she was a virgin so that didnt work out too well). The next morning I woke up at 5:00am saw the blood on the sheets, and had a terrible guilty feeling. I took the sheets of the bed and covered them with other blankets, and then went for a run to help clear my head, tossing the sheets along the way. I got back from my run, showered, ate breakfast, read, and just passed the time until everyone else woke up. Once everyone else was awake the house was very uncomfortable. My friend is expecting an actual relationship, and I have a feeling our other friend knows what happened because he was extremely quiet the next day (being quiet is far different than his typical personality). Nothing has been resolved yet, and things are still very uncomfortable. In a sober state of mind nothing would have happened I need to tell her that Im not going to be able to make things work, but I know she will think that I was just using her. Shell be crushed if I say I dont feel the same way, but I cant let her continue on thinking otherwise. I know what I have to do, which is apologize and tell her the truth: that it wouldnt work. I guess I am trying to find out if thats the right thing to do, and I would like to know how you guys would handle this situation.