I;m trying to catch up on this thread, and wanted to read all the replies before replying myself. Some of the people who replied to this thread are people who I consider my closest friends on this forum. That being said.
cold, your comment to kis was really uncalled for. She is a very kind, but honest person. I've experienced this myself. She doesnt have to "Have a penis" to understand.
Now, to the problem at hand:
I wouldnt get myself caught up in a mess like this, because I dont use alcohol or drugs, and I would be careful not to. That being said, whats done is done.
I'm one who believes in honesty. Had this happened to me, I would have gone to my friend, told him the truth, and accepted the consquences. In my mind, lying to my friend, would be a no no.
To me, friends gfs, are off limits. Heck, friends ex gfs are off limits. I havent ever experienced the former. The latter.. there's a story there, although nothing actually happened.
When i was in college, I had a friend, Tom, who had a gf, Stacy. They met first before he introduced me to her. Simply put, she was crazy about me. She told me many times that she would have wanted me, had we met first.
The school year ends, they break up. We all go home. She calls me all summer, writes me love letters, etc. Tom knew about it, because I told him. His attitude was: "I dont like that you guys talk, but if you ever touch her, I'm going to kick your ass. You dont fuck your close friend's ex gf".
She was afraid of his temper. I then found out that the NEXT school year, after I had graduated, but used to go out to visit them, they had sex, even though they weren't offically "together".
Eventually, Tom;s and my friendship ended, for other reasons. Stacy at that point became afraid, and shyed away from me.
I still dont think I would have gone near her, but I KNOW that if Stacy and I had gotten physical even accidently during the time when they were together, I would have told him. Thats the kind of person I am.
Mistakes: People make them. You cant help what you did. Covering it up, and not telling him, is to me, just as bad if not worse than the actual thing itself.
I would go to him, and tell him what happened. He might get furious, want to kick your ass, and not want to be your friend anymore.., but.. if he finds out some other way, he might feel betrayed double fold, both because you did what you did, and then didnt tell him about it.
I dont know if my viewpoint is misguided, but this is just my feeling.
I hope you can work this out. It's a bad situation. Good Luck.
Mitch