hikochan
I too find it hard to believe that any man wouldn't want a smart bright strong submissive of his own. I know that some men just aren't into it period but wow I don't know why.
I suggest that you go to the Knowledge section and find my thread on hard limits questionaire, take the sub one, print it out and give it to him.
Expect him to feel uncomfortable and embarressed but insist gentle that you need him to know these and that you really want to talk to him about it. If you can print out the Dom one, and most of the question are what he likes to do with a sub, and get him atleast to read it, take it if he will.