Is it ok to bring up old stuff?

I believe if u choose to forgive someone for what they did & continued on with the relationship, then u can’t bring up that issue anymore. That’s what we agreed to but apparently that rule only applies to me. Almost 2 years ago we got into a argument because he claims I locked my phone when he came around. I actually didn’t & I wasn’t talking to anyone. Between then & now, he brings it up every couple of months because he claims it’s not sitting right with him. I’m going through a lot mentally right now & this is stressing me out that he’s bringing it back up. He’s saying he can’t trust me, I’m a liar, who knows what else I’m keeping from him, he can’t marry a sneaky person etc. I honestly swear I wasn’t doing anything, I literally had just given birth so what man would I even be talking to🙄 anyway I just don’t feel like its not right for him to start huge arguments about this when he feels like it even after agreeing he was letting it go & getting over it. We had a great weekend together, our child was at her grandparents house. Then comes Tuesday morning he literally brings this old shit up