How do I get him to stop thinking about my past

Meg💜

I’ve been with my boyfriend for over 4 months now and he still brings up things from my past. It’s not something I’m proud of but he always finds a way of bringing it up. At first I just ignored it but now he’s constantly finding ways to bring it into arguments. We argued last night about it and now we aren’t speaking. He keeps asking me how i think he should get over it but he won’t listen to any of my suggestions.

Has anyone been or in this kind of situation or does anyone have any advice on how we can overcome