When I see this, I started thinking. And most of the vegan people I know hook up with other vegans.

I don't think I could have a vegan girlfriend. Don't eat this and that. So I don't think it is only sexual. It's much more difficult to, let's say share a good meal and a movie....

At least most vegans don't have a problem with having friends who eat meat and other things they "can't" eat. But they tend to make friends with a lot of other vegans/veggies.