I have this childhood best friend lets call him X (we are both guys) when I was 14 he came onto me and we've been having sexual relations with no kissing. As we grew older we continued these sexual relations while he was chasing these other girls but I grew to have feelings for him and held on that he was confused for several years.We've helped each other a lot through the years with each others issues and connect greatly on a emotional level.On my 16th birthday he got really frisky with my friend(a girl) who he had just met and I got mad and I finally told him a week later that I began to have feelings for him but he told me that I should just forget them and he should of stopped our sexual relations a long time ago.Nothing went further with him and the girl on my 16th birthday but after wards we still continued our sexual relations.On my 20th birthday he got my friend(a girl) to cheat on her boyfriend because they were making out and I got mad and discontinued our friendship but we got into a argument again and somehow made up and became friends.Throughout my life I tried to end our friendship but he at one point cried or convinced me to not go and I believe i am not emotionally strong enough because we had went through a lott together to this day.To this day he is currently dating that girl from my 20th birthday who her boyfriend broke up with her because he found out she was cheating.But, he(X) is cheating on his girlfriend with me because we still continue our sexual relations.Now when I come over he always wants my undivided attention because he gets mad at me if im on the phone or texting when I am with him.We connect great as friends and a emotional level because he says at one point he likes talking to me and he wants me to come over to his house often.I also tried dating but when I tell him I am he gives me this jealous sarcastic attitude and jokes about who im dating.I am bisexual but not open but I believe in loving people regardless of gender but i believe he is not willing to admit it himself.I don't know what to do I like our friendship and the sex but its wrong because we always connect so much farther its almost like we are practically a couple whilst him and his girlfriend fight often.thought it is emotionally draining for me to hold myself for someone that I love who I believe loves me but buries it.I would like your opinions please because they are most appreciated