AITA for not believing my husband?

English isn’t my first language. I apologize for errors in advance.

A little bit of info: at the beginning of the relationship, we both agreed to only follow people who are friends, coworkers, and celebrities, but not random people who post thirst traps, nor exes. Fine with me.

I’m (24F) insecure about my body; I’m on the skinny side, A cup and small butt type of body, but I’m doing my best to work on it, but it’s hard due to this:

I’ve caught my husband (27M) following accounts of girls who post half naked, if not, naked pictures of themselves on social media, especially twitter. The girls look nothing like me. Anyways. Every time I confront him, he tells me they’re “old follows”, but I don’t believe him. I check his following about once or twice a month, and then I see those accounts there. Accounts I didn’t see the last time I went through his following. He has promised me to stop and that he won’t do it again, but after a while, he does it again. I know I’m stupid for giving him chances…

Some of you know that you can see what your friends like on twitter. Yesterday we had a fight because I saw he liked a picture of a girl literally showing her boobs on twitter. I didn’t need to go through his following because I’m doing my best to stop, but when I went to the account, there he was. He kept saying it was an “old follow” and that he “forgot” to unfollow it. Yeah sure dude. Whatever you say. I told him I don’t believe him because that’s what he always says every time I see he followed one of those accounts. Then he proceeds to say to “believe what I want”. He gets mad that I don’t believe him, but his actions always prove me otherwise. Why would I believe that lame excuse? He then decided to deactivate his twitter account so that the problem “goes away”. Really dude?

So yeah everyone, AITA?

Edit: I am already planning to get a divorce because it keeps happening and I’m honestly tired of it… :/

Edit 2: he always says he wants a divorce every time we argue about other issues, and he said it yesterday, and I’m just done. I feel numb, depressed, but at te same time I feel like I’ve lost feelings. :(