My ex wanted to see my boobs

My ex & I are on good terms. We broke up 2 years ago and we were together for almost 4 years. It was the worst breakup I’ve ever gone through, and I loved him dearly. However, I got over it eventually and my love & feelings for him are completely gone.

He checks up on me every now & then and we keep it civil. Sometimes he would make passes at me and say sexual things like commenting on my story, “Your tits look so good” , “I want them in my mouth again”. Last night for example, he said he misses my boobs and wants to see them. I told him no, and he kept on insisting. I told him no again and I told him that I don’t feel comfortable with that and specifically stated I don’t want to do it. He then said “C’mon…just this once! We can even video chat” and I said no. After I said no he was like “fine” and I could tell he was pretty annoyed with me for whatever reason. This is the second time he’s asked for sexual pictures of me.

Is this why people say to not keep your ex in your life? I genuinely don’t care to keep him in my life but last night really rubbed me the wrong way. Should I take this as disrespect or is it not a big deal?