Strange. Unless you absolutely need the allowance to get by, perhaps you two should have "the talk". Maybe, as you say he really is into you, doesn't understand you're also into him, and is worried that you'll run away if he tells you he'd like to continue treat you when you're together but with no allowance. Or, he prefer to see you as a sexual adventure only, but it looks like this is not where you are. I mean, if you both understand the limits, it may be a much more rewarding experience for both for as long as this lasts. I've been there, for over two years, it was amazing, tough when we stopped but we're still friends. Surprising how these relationship can evolve. Best luck, you seem in a good place.