In my opinion, what is really important is that your pee buddy and you are close enough to trust deeply each other. I can say I love my pee buddy, as a friend. I think he loves me as a friend. We practised together a lot during holiday. He is not at all paruretic, but very understanding my psychology. I know he is not gay, but I don't think it really matters.
If you do not feel comfortable with someone, I agree he is not an ideal pee buddy. Maybe you have a close male friend who could easily accept to be your pee buddy just because he loves you as a friend. Just consider your close male friends, and maybe you will find that one of them could be your ideal pee buddy. I did like this, and my choice was good!
Nick