As a bisexual woman myself, I can say there are plenty of people whose company I enjoy, but have no desire to sleep with. That goes for both women and men.
Do you think people can be friends with people who happen to be the same gender they are oriented toward?
Eta: I was thinking this because I mentioned to a friend if mine that DH was hanging out with a friend, who happens to be female. They've been friends for over a decade. My friend thinks something must be up, because men and women can't be just friends. I told her she was full of it, and reminded her that I am bisexual and manage to have platonic relationships with men and women. I'm pretty certain straight people can too.