Is it normal that i love anal sex with woman's and... man's maybe?

So, I'm man and I'm 27. I love sex with my girl, love licking her pussy and ass, and fuck her in "usual" way. But, i love also when she touches my ass and fucks it with dildo or strap-on. Sometimes I don't want it at all, and I am even wonder, why it to me. But time passes and I need it again. In most cases it delivers to me pleasant feelings, but sometimes not. The initiative almost always proceeds from me. I never had any kind of sexual role-play. Periodically I shave around my intimate zone. Everywhere. I think it calls "Brazil bikini". I like feel myself clean there, and anus too. I prefer to watch lesbian porn, can watch hetero porn (In most cases when I'm watching it with my girl), several times we watched MMF bisexual porn and I consider we both like it. At least I can watch this type of it (it takes from me long time to find any bisexual porn that i could watch without some freaking appearance man). I'm really not attracted with man appearance and can see Beauty only in Girls. I'm not use any woman's clothing ever. Few days ago, when we just walking outside and talking , she asked me, whether I can suck man's dick. I answered that couldn't, but, having reflected, nevertheless understood that it not so. Eventually I decided that could make it if we had sex together, in case the man joins us and my girl would ask me about it or would direct me... And I, probably, could allow it to take me behind. Sometimes i have phantasy's around it, but haven't any about Me doing another man from behind. With all of this in mind i know that i can't even imagine that I kiss the man or have sex with the man only. At the End i can't understand my sexual orientation =\