Married Ex

Good evening, please how do I politely tell my married ex to stop bringing back our past memories?

My ex and I separated on good terms, he is AS likewise myself so we had to go on our separate ways. It over 6 years that we separated but we still talk once in a while. I don’t have any feelings for him anymore but I don’t know about him and I don’t have any intention of seeing him either though we are far away from each other.

I don’t want to block him and I don’t want to offend him ,but when I take a picture with a random male friend and I upload it on my status ,he tells me he is jealous that the guy is an idiot for holding me or touching me. Asking for my recent pictures and sending me my old pictures that I don’t even remember existed.

This guy is married with a child. How to I politely tell him to stop all this because I don’t feel comfortable with them.