Why would someone try to wear someone else's shoes in the first place? First of all, it's gross, and second, most people have their own shoes. It would be extremely bizarre for anyone, let alone maca's girlfriend to try to wear your shoes. I don't think you have anything to worry about there.
Also, if he takes off his wedding band, why would he let her wear it? Why would she WANT to wear HIS wedding band. That is just weird. It doesn't even make sense. It probably wouldn't even fit a woman.
These are extremely odd things to be concerned about.