I find it quite worrying that you assume automatically that because your husband had experiences of abuse at the hands of a man he would potentially be an abuser, and that when he claimes not to have any fantasies about men or boys you don't seem to believe him.

Switch the gender rolls around and imagine your husband was a woman who'd been abused by another woman, would you still think the same?

I suggest you read the links scottyg provides and the front of the site, and considder things very carefully, particularly when it comes to these sexist, disgusting and hatefull beliefs about male victims of abuse, ---- indeed it's often these beliefs that make admitting to what happened so dam difficult.