I think from what you've said, that it may be important for you to develop friendships with females where sex is definitely not on the agenda, so that you can build a strong platonic relationship. Maybe someone who you really are not attracted to . It is often very confusing when sex and friendships get muddled. I felt quite repulsed by what I had done with my friend for a while, and it affected the way I felt about her for a bit, which isn't fair, cos she's lovely!