@Chet31
I understand how you feel about their situation, but you need to look at it from a different perspective. He hasn't been able to touch a woman, much less be near them, in his whole life- or, at least, as far as anyone remembers. The sensation of soft, smooth skin. The fragrance of feminine care products. These are all foreign to him. He doesn't want to lose the one and only woman who can touch him, as well as nullify his ailment.
If you have played FATE, you might be familiar with Hassan of the Serenity. If not; the long and short is that her touch kills. Only your avatar is able to freely touch her, inspiring her desire and, dare I say, need to be with or around you.
TL
R He's acting that way because this is the only time he's been able to. It's new to him.