Female Dating a Gay/Bi Male?

Okay, so two months ago, me and my boyfriend have started going out. He was primarily identifying as gay, although he has have experimented with both men and women(sexually at equal rate as a matter of fact) and he calls himself "homoflexible"(he also likes to dress up as a female sometimes and does drag queen shows), when we went on our first "date", although neither of us knew what to expect since I knew he was gay ( and let me make it clear hes no way ashamed of it or hides it), we both started to like each other, and well I could just sence it because he did anything that a normal guy would do. Second date we were already getting close, and when he was grabbing my hands and putting his arm around me, I knew it wasnt just in my head, so i went in for a kiss, and what a kiss it was. From that moment on, our sexual tenstion was just incredibly crazy. We both would get turned on very much so by messing around (just dry sex kissing and touching), we would have dry sex everywhere, and I am not the type to give it up too early, so I would always say no, and I could tell he was driven crazy, I know obviously he wanted me bad and it showed. So he said he wanted to try to give me oral sex, because thats one thing hes never done. When things got about a month into our relationship finally i felt like i knew him well enough to give it up. I let him give me oral sex, he did not like the taste of the vagina. I mean my vagina is clean, has no smell, but it tastes sourish(yes i di taste it). He didnt enjoy that taste. Which was fine by me, but when we finally did have sex, it was uhem a little different then id expected. We had so many hot and heavy moments that were passionate that I would of expected our sex to be the same. The first time though was stressful for both of us i could tell, but that doesnt bother me, its our first time, we were nervous. He couldnt *** tho. The second time, we had sex for hours, and yea it was hot, I really enjoyed being with him, he very much looked like he enjoyed the whole thing too. Different positions lots of kissing and such, but again, he didn't ***. Right now we're at our 4th time and he still has not ***, after a while of having sex every time.(he did watch porn and masturbate, which he said he stopped, but he does still masturbate, although hes really trying to cut down) Out sex, movement wise, seems amazing, its hot. But he just cant ***, because honestly, hes what theyd call "bottom" and hes used to being "the girl", so thats how he cums, by having his prostate stimulated. I understand, he says hes not worried because he loves the feeling of his **** in my vagina he says he is just used to masturbating or anal sex, that it will take him time to adjust, but we both like each other very very much. I can trully tell. I'm mostly the only person who's freaking out about it it, seems like. I make jokes about other men, he doens't like it, im getting the vibe that he would like me to see him equivalent to any other straight guy i would date (btw hes not very flamboyant, he doesn't usually get along with gay people, hes more of a girl then a gay guy). He feels weird when I ask him about sexual experiences with gay guys, I have no idea why? He also really wouldn't not want me to do anything a gay man would do using toys on him, he says I have a vagina and that's what he wants to do. (and NO HE DOES NOT WANT TO EVEN HAVE ANAL SEX WITH ME, he does not like to stick it into that hole). Isn't that just weird? I honestly would enjoy giving him a prostate massage, but he says I'm not touching that. I am just so worried that he doesn't *** because it doesn't feel good, or that eventually he will want a guy, which we talked about as well, he says, its a possibility but we can figure that out if it happens., He is very attached to me, he loves my boobs, he says he cant believe hes been missing out on boobs, and my female body such as my hips/waste, which is the part he loves most. And he always wants to touch and kiss me, hes not afraid of touching my vagina at all. Everything seems to be great. Yet I am very worried. He also tells me, hes never had this strong of feelings for anyone, male OR female. I would like gay, straight, bi whatever people to give me some of their opinion on what is going on here. Maybe I am completely blind and not seeing things through, but if your not gonna be helpful and just rude don't bother answering please. Why cant he ***? Can he really love me if I am a female? Do you guys think eventually there will be a problem we cant fix? Do gay guys enjoy the FEEL of vagina? why do you think he wouldn't want me to touch his back door?