I don’t know how to get over this, someone help me?

hey everyone,
so here’s the situation. last year in October my boyfriend met two girls while he was out at dinner with a group of his friends. he followed them on ig and he DMed one of the girls memes. he didn’t tell me about these girls, i found out he was following one of them because she liked a picture of his, i asked if he knew who she was and he said no. little did i know a few weeks later i look at her stories and there’s a picture on her stories of all three of them. when i tell you i was distraught, i was hurt. i waited until he called me and i asked and he admitted it. i asked why he didn’t tell me he said he didn’t want to hurt my feelings and then i asked why he wanted to be friends with them and he said he didn’t want to he just wanted attention. i tried my hardest to forgive him however it’s engraved in my brain. now he goes to this bar thing with his friends and he followed a waitress on IG. the place has good food, a pool table, and a bar. i checked on the waitress IG and all she posts is bikini pictures. i’ll admit im very insecure. i hate the fact he follows a lot of bikini girls and he used to like a lot of pictures. i’m not sure if he still likes pictures i have no idea. anyway, i can’t get over it and i truly want to become secure in myself. i look at the girls he follows and i look nothing like it. i don’t have the body or the confidence like the girls who follows does. i truly want this relationship to work but if it doesn’t i still want to become confident in myself. nothing is worse than brining low confidence and low self esteem into a relationship where the other person did nothing. so pls someone help me?
I don’t know how to get over this, someone help me?
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