I understand that for some people it's different, but here's what happened to me. I'm a straight woman. I've been asked out twice by lesbians. I felt flattered (who wouldn't want to feel attractive?), and quite frankly, it's much easier saying no to someone of the "wrong" orientation than to someone who's the "right" orientation. If I say no to a man, his feelings tend to be hurt because he thinks he ought at least to be in the running. With the women, I simply said that I was flattered, but I batted for the other team. No harm, no foul, no hurt feelings. In fact one woman said she'd never had a kinder turn-down. LOL
Anyway. I simply don't feel that a tarot card/draw/reading can accurately tell him whether his interest is gay. Maybe that makes me an unbeliever, but look at the readings section here and you'll see how many interpretations you'll get for the same reading.
I think what I'm most concerned about is this. What if the cards say the man is straight? Then he doesn't ask the man out or approach him in any way, trusting what he thinks the cards say. What if the man isn't straight??? He's wasted a chance at someone he cares about just because of his perception of some pieces of paper. Would you really want to place such importance on them? The only way to find out if he's interested is to ask him. Or have a friend ask him. Or something.
Sorry. I simply worry about people making important decisions about love and life based on the cards. The cards can offer suggestions, guidance, and ideas. But absolute, indesputable, not-open-to-interpretation fact? I just don't see it, and an opportunity could be missed that might be a beautiful thing.
Maybe I'm just a hopeless romantic!!! LOL But if he's worried about a bad reaction, have someone who knows both of them test the waters. That's how I met my last man, and it was delightful!!!