Hello Mike!
Um lemme see, you're on a gay website and you're teasing us about your sexual orientation... could you possibly be um... bisexual?
So, it's a girl. That's nice. We don't really care. But it's nice.
So you are a normal guy. Yay!
Let's see, about a year ago, you some how came out (or were outted) to them as bisexual or maybe went as far as gay, and they freaked because they saw their little boy with other little boys but then you met the girl you are dating now and they are more relieved because she's not a he and they can handle that better at least until you go through another boy phase... you get along well with your brothers because they either don't mind your sexuality or don't really see it as a threat to their own masculinity thus making it not a problem.
Add me if you dare. Nope, no questions. I think you answered them all in your non-informative introduction. Nice to meet you.
Lugh