I actually kind of like this other guy. I don't think he wants to be with Leah or anything, I think that he is just worried about her and can't read Roxant like she can.
Plus, I think that Roxant needs this sort of thing. He's still caught up about how he isn't worthy of her, and how she doesn't know that he had to crossdress when he was younger. He needs the push to get past both of those things and tell her that he was the "girl" she was looking for all along, and that he actually wants to be with her.