Sometimes, what we have built up in our heads as fantasies for "getting off purposes" are things we actually don't want to try in reality. There's a lot of things I can think about for...personal purposes...that I found I did not like in reality.
You have to figure out what it is that is attracting you to men. I know a lot of guys have penis fetishes. It's part of a dominance thing, I think. (And, I think its ingrained in men to be obsessed with their junk). But, in reality, these people with this fetish aren't actually attracted to men...just the idea of being dominated.
Sex is pretty much just sex. It works a bit different with a man than with a woman. But, in the end..boinking is boinking. You may be bisexual, but may also be more submissive. I recommend just finding someone that completes you.
Eventually, you can do pretty much everything under the sun with all different types of people. Sex is sex. It can get pretty boring and you don't have a whole lot to show for it. Finding someone you love and can share eveything under the sun with is rare.
I sometimes feel a little sorry for people that get caught up in their sexuality. It might be because I just don't understand gender being a huge deciding factor in who you may date/be intimate with. Genitals are genitals...mostly replicas can be bought that perform surprisingly the same functions as the real counterparts. But, I think if this is a major deciding factor in your love life, you are setting yourself up for a shallow relationship.
I know I joke a lot about men being overrated. I don't really hate men. I often say I'd never date men again, but that's only a half truth too. I'm open to anyone that I love and am attracted to. Genitalia is not the deciding factor. It's so much easier to be this way because it opens a lot of doors. You don't have to struggle with the whole complex of 'Am I gay? Am I straight?' You're just open to love who you love.
Part of the reason fantasies are so strong and compete with real life is that your mind is the most sensual organ. Finding someone that can take sex beyond just a physical level to something greater is what to aim to find. In those people, you are taken a little beyond mechanics of genitalia. But, anyway, this is getting a little bit too old Eastern philosophy on sex lives. But, that would be my advice...being that I also like men and women and have had fantasies fulfilled that weren't up to par. However, I found something a bit greater than I could have fantasized and now I just have great sex.