Before you read any of this, please keep in mind I mean no offense whatsoever to anyone.
I'm a transguy (FTM) and I've recently started online dating. There's a guy I like, who happens to be a cross-dresser, but I feel kind of awkward talking to him because I really have no idea what it's like to be a guy who cross-dresses. I absolutely don't have a problem with him cross-dressing, and I think it's great that he's confident enough to do so out in public or so, but I just don't... get it. For me, being a transman is a big part of my identity, but I'm not sure to what extent that's the same for cross-dressers (i.e. whether it's a really big deal or only as important as, say, a hobby/interest).
Any advice on how to proceed? I don't have a clue about this kind of thing, or even whether I'm supposed to call him "her/she" when he's wearing women's clothes (as one would if talking to a drag queen). I don't want to do anything to offend him or make him feel uncomfortable, so I want to learn about it from a cross-dresser's point of view before asking him out on a date.