It it normal that i'm bisexual?

This is normal. You need to drop the homophobia, though. You saying "i wanna date a straight man not a gay" sounds a lot like you have some (negative) ideas about what "a gay" is like.

Also, just a heads up, a straight guy is very unlikely to go down on you.

Fuck yeah? Why not just like it all?
But as for liking for a straight gay man, do you mean just a gay man? Because a man who is gay likes other men. So whether he's done it once or twice he's a gay man. The only way you'll get a heterosexual man to do that is if he's extremely drunk. Embrace your colors hunn and then come celebrate the gay parade with me!

Of course this is normal. .you have headphones and a cell phone with Ethernet?
perfect, go jack off.. you sound like you need it. This is more common than people like to admit.

You're still very young and will probably go through changes in your sexual identity. You sound bi, but will probably end up just wanting men at some point, but who knows. At 2o, I couldn't get enough pussy. There were no gay thoughts in my head(or at least none that had surfaced yet). As the years went by(after many years of marriage & 2 kids), I found myself in my 50's having very strong gay urges. I fantasize & masturbate to gay porn almost nightly. Although I haven't had a gay lovemaking session yet, I feel its only a matter of time. The thought of a hard cock in my mouth & in my ass makes me hard just thinking about it. 35 years ago(hell 1 year ago), I would have been totally grossed out by watching a man cum in another man's mouth. Now I get rock hard just seeing a hard cock in a man's mouth. I'm not sure why my thoughts have morphed, but don't fight your feelings, it will drive you insane.

I'm trisexual. I'm working on being quadsexual but I need to get written consent from my folding chair.

Let him suck you off until you cum. You might not want him fucking you up the ass after you get your rocks off. If you still want it, bend over and let him fuck you silly...Good luck!

Dictionary definition of normal (you could have looked it up yourself, but I'll help you out here); "the usual, average, or typical state or condition." Therefor, it is probably NOT normal to be bisexual. However, that doesn't make it wrong or bad. It just isn't the way most people are.
It is much more "normal" to have fantasies that excite you even though you may never act upon. But I think you really need to get your girl together with your girl and start your physical relationship. That would be the "normal" thing for two people in love to do.