Being bi is a pita most of the time. The biggest thing Ive seen so far is that, when it comes to sex, straight and gay people have one thing in common we dont: they are attracted to only one sex/gender. Bi-curious or those with a few experiences both ways are at the ends of the spectrum, and still do not really get being bi. For me, it's physically easier for a woman to be a man than the other way around.
My last gf knew I was bi from the get-go, she was okay with it, so it seemed. But she always made excuses about it, saying that since i was with her (and monogamous) that I was straight. When you're bi, people think the whole world is your oyster; actually, it's twice as hard (conservatively) to find someone, and ofc, everyone is a 'threat' (or becomes that way). Here, most bi men are with women, even married, and want that piece on the side, which is okay once in a while to work out the kinks but totally unworkable for a relationship, and istm most bi women want a man in the room for the same kinks. Bi men outnumber bi-women by probably a 4:1 margin.
There is a huge difference in a guy who occasionally likes being with other men for mutual oral/jo, and one who would actually date a man, be seen in public with him, enjoy all aspects of sex and lovemaking, and be versatile (another surprise I found when I came out; I figured all bi men would be 'versatile' (top and bottom), but such isnt the case). I also found a curious disdain from gay men once I revealed my sexuality, like the B in GLBT was supposed to be in lowercase or something lol.
I guess the biggest thing for me is that I would do damned near anything for my partner, even if that included something like letting her be with another woman, alone, so I kind of have thought that's the way others operate. While some, like my last gf agreed to as much, when it came down to brass tacks (me being with a guy), she shit brix.
Note: I live in a relatively small, conservative city where being openly gay is almost never seen (even seeing a rainbow sticker on someone's car is rare), and the nearest glbt friendly establishment is a good 30 miles away, so my experiences are most likely skewed.