After all, you’re in the relationship with Friends Monica’s Turkey the one with the turkey shirt, not her! If this bothers you so much, you should have a discussion with him about it because this is something that he has to handle with her. This behaviour probably persists because he allows it to happen, so he is the only one who can put an end to it. It probably means that he still likes you and/or just likes you pictures. It’s possible that he found incompatibilities with you as a girlfriend, but still considers you someone who could be a good friend.
Friends Monica’s Turkey the one with the turkey shirt, hoodie, sweater and v-neck t-shirt
Best Friends Monica’s Turkey the one with the turkey shirt
He did the adult thing and Friends Monica’s Turkey the one with the turkey shirt. It happens, people separate amicably all the time. But, I’ll give you two possible reasons to your question. When you’re ex deletes pictures of you guys together, or pictures of you in general, he’s wanting to move on and can’t have emotional pictures hinder him back. Now since you’ve said he keeps his other exes pictures still, it could likely mean he broke off in better terms with his exes than compared to you (no hard feelings).