Good for you. I hope you both can keep just enjoying it for what it is. Like I said before, it doesn't have to mean anything. We're complex creatures and everybody's got some thing that surprises, puzzles, etc. There's no right or wrong way to live life IMHO (some people will try to tell you otherwise). It's a journey, an exploration, a discovery, a freakin' fun-ride, whatever. Keep exploring together and talking along the way, and know that not everything needs to be labelled or explained.
When I was younger I thought of my crossdressing as 'naughty' 'dirty' but it sure was a lot of fun and I kept doing it, so I just treated it the same way I treated the Penthouse mags under the bed . But I used to quickly undress too and feel ashamed a bit (I know some people who feel that way about ANY sex). I've been very lucky to have partners who also liked the kinkiness of it, and now it might not be as naughty or dirty (although I still like to think of it like that) but it's more fun than ever and I never feel ashamed or guilty (unless I should have been fixing the roof instead of playing ).
It is what it is (lol), and is teaching me not to judge others and expect them not to judge me.
So, Dress On! Stapler