Bisexual woman living happily with a bisexual man here. I thought the old LGBT thread was great, though I was a bit taken aback by the "I'm bi and my husband should therefore feel honoured to have me" statements, which didn't really make sense to me. The main difference I've noticed with being with another bisexual is a) I don't get any flak about my sexual orientation (of course, the relationships in which I did get flak were not good ones), and b) equal opportunity ogling of actors on TV, we can tease each other about our taste in men or one of us will say, "What did they say? I was distracted by the cleavage," and the other will reply, "No idea, so was I!"
Out of curiosity, are there any poly folks here? I'm monogamous myself but I have a few friends living happily in triads and so forth.