I don't really know what to say but I can understand why it would bother you - the combination of pills, weed and alcohol obviously caused you to lose inhibitions and engage in things that you might have been wanting to try...especially if you had bisexual urges beforehand. And even if you weren't interested in taking part in such things the suggestion being there with all the other stimulants probably helped the matter on. And this unpleasant experience is obviously keeping you from making peace with your orientation, whichever way it might be. I don't know if you're seeing a therapist but it might be a good thing to talk to him/her to get it out in the open and find ways to deal with it so that it no longer lingers in your subconscious. One thing you have to remember that something that happened in the past is there only, in the past; it has happened and it is over and done with, focus on the present and the future. A lot easier said than done, but just remember that your past doesn't dictate the person that you are. It surely influences you but you can create your own now and your own tomorrow. Best of luck to you, hope things look up for you :-)