"They are mainly women, well educated and politically active, but are squeamish about having sexual contact with meat eaters. [...] Another vegan woman was so repulsed by the practice that she wouldn’t even let a carnivore get to first base: “I couldn’t think of kissing lips that allow dead animal pieces to pass between them.”"
Talk about restricting your dating pool... However I'm sure you could exchange fruits for sexual favors. It also begs the question, can vegan women swallow?