What’s the right thing to feel?

Just Recently my boyfriend went back to his old job from high school, (were 22) and a lot of people he knows still works there, an older women when he was 16 let him touch her breasts one time but I believe she’s not longer there and especially a girl that he liked. He used to even go on my Instagram and go to her account to look at her. (I have to leave a detail out but he can no way date her though) last year when they saw each other at college, he got “hard”” from her because she was saying she was sad that she lost her virginity to a guy but he left her. He eventually told He’d have sexual thoughts about her and how he liked her while he said he was in love with me. At the time it made me question if he was seriously in love with me.

It’s been a year since I’ve found out about that stuff and he told me he no longer likes her, he loves me. he said he has to work there again because we desperately needs money and at that place he made good money.

He told me he was going to mind his business and just go there to work and that he doesn’t want any problems with them, he says he’s past all that I should trust him and I shouldn’t worry about what happened in the past.

I feel very sad, worried, Im have anxiety over it, I’m feeling insecure. Since this was over a year ago should I get over it? Or is it okay for me to feel like this? He hasn’t done anything but my heart hurts.

(Ig this is import but she is pregnant and currently has a bf herself I’m not quite sure if they are married but her and her bf work there)

I left details out but this is just the jist of it.