Manufacturing anger, on principle, because you think you should be angry, is not a good idea. If you do not feel anger, you do not feel it!

Whether you were raped or not does not sound like the question here: The morning after you did not like what had happened the night before, but your friend did not get you drunk, you did that to yourself! Your friend might have thought you were okay with sex, not all drunk women who have sex are victims.

Just because you were drunk, does not absolve you for your part in whether or not there was sex. That you do not want to have sex with someone when you are sober, does not mean that person is "in charge" of you when you drink or even that you do not want to have sex when you are drunk.

Too, the other person gets just as much right to like/dislike sex (with you or another) as you do. Your friend wanted to have sex with you and you do not appear to have said "No". I don't think you were asleep or passed out and that's pretty much the only three reasons why he should not have had sex with you.

I would work on my own drinking problems so I do not behave in ways I feel are against my own principles (if that's how you want to live; some people get drunk specifically because it lowers inhibitions and is more "comfortable" and leaves them less anxious and "up-tight"). I would be friends with this man, especially since he apologized for his actions (which says what sort of man he is, not whether his actions were "wrong") since they appear to have upset you. I would have a very specific conversation with him about sex between the two of you and what has to be happening (you actively initiating or, not drunk, etc.) before it can take place.