Well, I'm bi, but to avoid the annoying he/she sentences, I'll write about a man right now.
So... he would definately have to be a very calm, "soft" person. Not soft as not masculine, but as I can't stand loud noises/people, he shouldn't be too active or too much of a party guy.
He'd also have to see me as his complete equal. I'm not a feminist, but I don't want to be an accessoire either.
Hmm.. It would be nice if he liked music and books like me.
As for looks, I like dark, short hair and grey eyes- dunno why. Also I'm usually attracted to people who are at least 10 years older than me... 