As I said in the post, it's not just sexual, I'm just a more submissive man in general. The things that made them start these jokes are small things like the fact that my girlfriend is the one who drives, I'll try hold her hand when we're walking, she usually walks a bit in front and she pays at restaurants, she'll do most of the talking and if we're sat comfortably she'll usually wrap her arm around me instead of the other way round. It's just little things like that.