It's not that I am that bothered by this but never come across it before! He regularly asks me if he can rub my feet and likes me to be wearing tights whilst he does it or wants me to stroke him with my feet! I didn't really think about it at first as it was always done in the heat of the moment if you know what I mean! I opened up YouTube on my ipad the other day and he had searched shoe play....? I watched a vid and it seemed a but creepy as it was someone videoing a women on a train dangling her shoes off her feet!
Not overly worried but never come across this before and find it a bit strange.