I don’t really have anyone else to talk to about this

at the end of 2024 I (22F) got into a situationship with this guy I work with (I learned my lesson trust), he was my first kiss and we almost had sex, until he ghosted me and then got with another girl. We still had to work together and it was really hard at first, but we’ve gotten to the point where we’re “friends” and we talk like nothing ever happened between us (which bothers me deep down, he never acknowledged how he made me feel and I can’t say anything about it).

4 weeks ago, a new girl started at my job and he took a liking to her immediately. since I know how he is, I warned the girl to be careful if he tries to talk to her, but it didn’t work. fast forward to now, they follow each other on Instagram and he GAVE HER A RIDE HOME FROM WORK. he is 20 and the girl is… 16. he’s always talking to her at work and goes out of his way to help her even when he’s supposed to be doing something else.

ngl this shit has been weighing on me because I genuinely thought he was a good person. He was my first everything basically and because of it I haven’t been able to move on or heal properly, especially since I still had to see him every day since he hurt me. he has a girlfriend, but he’s constantly talking to this 16 y/o girl at work and on snap??? I’m concerned for the girl because obviously this isn’t appropriate, I asked for advice elsewhere and people said that he’s grooming her which is 100% believe.

today was actually his last day (I hope. he said there’s a possibly he might come back and as long as the girl is here, he might) so I can’t really report him anywhere?? what do I do? and how do I just remove this shit from my mind? I want to stop thinking about this situation but I can’t bc I’m genuinely worried for the girl and some fucked up part of me still wants his attention and i’m just sick of myself for that. I definitely need therapy but i don’t even know how i would go about that because I still live at home and i have one of those mothers where she believes young people can’t have depression, and if i tell her I’m going to therapy she’s going to ask why. she doesn’t know I ever went out with a guy because I wasn’t allowed to. my main goal for 2026 was to heal and stop constantly thinking about this man but i can’t.