For sure being curious is normal. Try it. You're not loosing anything. To each his or her own taste on it. I've tried it. It's ok, but doesn't do it for me. But if I'm with someone and it does it for them, then sure I'll do it. But hey, that's just me. You gotta find out for yourself now.
As for being gay about it? Sexuality has nothing to do with curiosity about your body and how it works. If you were wanting to have other men's cum, that might be different. But the question here is your own. So it really doesn't matter if your straight, bi or gay. You're curious about this, so go ahead, ask, receive opinions, but the best way is to simply try it.