I think he pretty much outed himself there... (though there is the off chance that he was quoting someone, but that's like 2%) I would at least let him know that it's okay, that you're not going to be weird. And if you think your friendship can handle it, why not let him know you're a, shall we say, 'kindred spirit'? 
It depends on the relationship you have with him, though.
It depends on the relationship you have with him, though.



