Dating someone with scizoeffective disorder and aspergers.

He's a cute guy who's a tad bit too interested in sex and I want to take our relationship further, but with him, I think he doesn't want that yet. He says he wants to see what will happen the next time we meet. Other than that, he doesn't want to talk much about things... Well, other than wanting to see me in a fetishly outfit.

So has anyone dated someone similar in this situation?