I think the first thing I would try to find out is the root of his confusion or reticence about sex or about some other dynamic between the two of you. Maybe it's all of the above. I didn't start dressing until after my divorce but I've often thought about how difficult it would have been to be open about Sherri with my ex, to actually be Sherri around her. About the sex, one clue to what's going on might be to find out if he would like to be penetrated; if so, that's a pretty big indicator, imo -- sort of a tip of the iceberg kind of thing.