How do you leave behind the ex who turned out to be gay?

My boyfriend and I just broke up, it was a pretty drawn out process. I knew he was bi, and I am as Well(he however, did not know that), and he just came out to his parents...due to yahoo answers incidentally. Anyways we broke up and then had this pathetic attempt at an open relationship that totally failed because I wasn't honest with myself or him, and I still had feelings for him. As of yesterday we are strictly platonic...and im crushed. I've got my happy face on and I just try not to think too much about it. But seriously, how was I not supposed to get jealous of him being with other girls...and I'm still slightly jealous now? To him its pathetic, im sure. So now what am I supposed to do? Now I have to deal with plenty of rumors that I was his cover-up etc. I just want to be able to move on and enjoy whats left of our friendship, I'm close to him and I would hate to ruin it over unrequited love...