Similar politics, feminist perspective agreement, definition of societal problems agreement, fuckyou attitude, and the sexthing (obviously ymmv). I'm fall well within the genderqueer thing, and some people would (and do) smack me for saying a boi can sex a lesbian, but I've know more than one gay guy to sex a gay girl / vice versa and many odd permutations. It's amazing what people do when the other person isn't being a creep. Or it's not, it's amazing we feel so obligated to play a particular role.