[MidasGirl]

My take on this (and this would include redgarding gay men as well) is that there is a continuum. There are people that are 105% homosexual/lesbian, they couldn't be attracted to the opposite sex if their life depended on it.

Then the sliding scale goes all the way down to the percentages where some might consider sex with the opposite sex, but they are really just not that impressed by them. Then it goes all the way down to people that are heterosexual but wouldn't mind trying it out with same sex. This is where bi-sexuality lies.

Then of course there is the 0%, or 100% heterosexual where they'd punch you if you even insinuated they hook up with the same sex. I've seen men that were happily married to women but were interested in gay sex (most famous case is Ted Haggard), and I've seen heterosexual women that had no interest in having a relationship with a woman but didn't mind hooking up just for fun.