It's probably no big deal.

It's human nature to look. I look at other men in front of my husband. He looks at other women. I will look at other women, comment about their beauty. Neither of us are attracted to these strangers. We are admiring beauty. Some of the ladies he looks at are in better shape than me. Some are thicker than me. Same goes for the men i look at. My husband will tell me and show me what he likes about my body. He always says, looks fade but I fell in love with your heart, mind, and soul. Those are always going to outdo looks. If something does bother me about a woman he is looking at, I saw something right then and there. "hey, youre gwaking and Im not cool with that". He realizes it, owns it, we talk about it. Then we move on. Talk to your guy. Be upfront and say something like "hey this makes me feel ensecure when you do this in front of me." Most of the time they do not realize they are doing it because its a natural action for them. Are there things about your body that you are uncomfortable with? Have you mentioned this to him? I bet what make you uncomfortable, he adores. What im getting to is, talk about it. all of it. whether it is uncomfortable, awkward, frustrating, talk.