Wanted to rant and needed some advice.

Me 24F dating 27M since 2 years, having some complications recently with our individual and our love life. A little bit about us- to give a context we are that couple that would look really happy to other people from afar, and I fell in love with him first, him much later. 6 months ago i found pictures of my best friends and 30 other women in his laptop, some were edited and some were about to be I guess. When I confronted him about it, he apologised and told me that he did not ever act upon it. I believed him, I still do. So I thought we will work upon it, he deleted all those images and promised that he would never do it again. I don’t even know if this is considered as cheating. One of the images he had was of my best friend, on whom I thought he always had a crush on because he said multiple times to me that she is very beautiful and yes she is and of course prettier than me. He always flirted with her and somehow tried to get closer to her but he will never admit that he likes her or anything. My father passed away 2 months ago and my boyfriend has supported me throughout and is really there for me emotionally. I am doing a bit better now but i get haunted by those images because my boyfriend has started talking to my best friends whose pictures he had edited and stuff, I personally feel that he has gotten this opportunity to talk to them. And I cant even stop him because he’s talking for me; as in they are updating each other on how i am doing. I don’t know , I am very confused and this is my first reddit post. I feel lost and I think i need to gain some self respect. I tried chatgpt too but I feel like i want some real advice on my situation from human beings. Sorry for my English, its not my first language. Please tell me or yell at me for what should I do.