How do you move on?

Okayy long winded but bear with me.. I (30F) have been married to my husband (30M) for 11 years.. our marriage hasn’t been perfect however who’s is?? Also to add to the length of time we’ve been together since high school. But recently I found out he cheated on me… it was years ago but it still happened. Soo in 2018 He took another girl from his past that we had prior issues with and took her site seeing in another state they stayed the weekend together and then in 2018 ended up going to the same college and spent time together then to.. he denies sleeping with her in 2019 but they definitely did on their trip… I don’t believe him but it doesn’t matter he already slept with her… she knew we were married as well but he still did it so he’s the one who fucked up worse..
I guess my question has anyone been through this and decided to stay? He’s remorseful but he now wants to pack up everything and move and sell everything we own.. I’m just worried he’s trying to isolate me rather than fix our marriage and it’s hard because prior to finding out I feel like we were in such a great place and now I’m just angry…