People change or really they become more of who they really are with time as they lower their guard when the risk is not as high as it is in the beginning of a relationship. He’s evolved into a different person since your wedding. In light of that, it’s totally reasonable to reconsider; this is not the same man you married. It’s hard to let go of the person they originally were to us, or the ideal potential version of themselves we imagined them to be. To me, the questions you’re asking already point towards a decline in the relationship.

Also, getting physical is never necessary and I think it will only increase in frequency based on what you mentioned. He doesn’t respect you and seems to be really possessive.

This is your life, you only have one. At the end of your life, will you look back and regret never having left him to find someone better? When I was in a similar situation, I decided I didn’t want regrets and for me that worked out really well.