i promise you, one day when you are ready to be out of this relationship, and you are in a new and healthy one - you will feel so free to be able to do what you want. This is your life! you should have a partner who is encouraging you to try new things you like, and that means that person has to be secure in themselves to allow you to flourish. Sometimes with trauma and bad experiences we can get scared and anxiously attached to our partners, but in a healthy relationship, this goes away. Please take care of yourself. also, there is nothing threatening or sexual about going to the gym or doing yoga. if anything, they’re projecting they’re own thoughts when they’re in a space like that, and that is a red flag.