Break up

My boyfriend of a year and half called it off. More him. But we just kept fighting. And we were living together. I’m 19 and he’s 17. And we still live together because my pos of my mother kicked me out and I recently just started working. But I messaged an ex a fee days after him and I broke up. I was trying to fill a missing piece with me. But ive known my ex for 4 years now and the feelings are exactly the same. He’s 18. I want to try to date him, but I feel like I’ll get judged and called a whore because we broke up almost a month again. And my ex is talking to other people. So I feel like it’s okay. But I don’t know if I should keep it private until I move out or what. Please someone talk to me