I am in a similar situation, though not entirely. I am very attracted to woman both romantically and physically. My god there is nothing hotter then a curvy chick with a huge set of tits.
With men I am far less attracted. I am turned off by hairy men. I am completely turned off by anal sex and man ass in general. I have zero desire to make out with a man or be in a relationship with one. But, and this is a big but, I am totally in love with dick.
I love seeing cocks, cut (uncut doesn't do it for me) I just love it. What I would do to just blow one and stroke one. When I watch porn, it is usually straight porn. I look for porn with men who have very nice cocks fucking woman. If the cock doesn't do it for me in straight porn then I keep searching till I find one.
I also love watching gay porn, but only when it involves the following: Handjobs, blowjobs, people just jerking off, or people comparing cock size. My god do I love seeing a big cock dwarf a small one, it's hot to me (This is due to a childhood experience.) I don't watch gay porn much because it has too much making out, and someone always ends up getting fucked; I am totally turned off by anal sex with men.
I stopped trying to label myself as straight or bi or whatever. I am what I am. I just accept that because labels piss me off and in the end, the only thing they are good for is denying someone some sort of freedom.