Just looking for advice.

So, kind of a back story. Ending of 2021-beginning of 2022 I cheated on my fiancé. We were both struggling with things going on around us. He kept putting school on hold for me (was always bad timing). He fell into depression and buried himself on his game with his friends. I was going through PPD (I didn’t even know). I felt neglected, not loved, ugly. I cheated on him a few occasions. Fast forward to now, 5 months since everything came to light. I’ve been fighting like hell to prove to him that I would never do this again. I know I was wrong I’m not looking for sympathy, we’ve talked a lot fought a lot cried a lot. What I’m looking for is, how can I show him that he can eventually trust me when he is ready? Prove to him I love him? Show him that I would die before this even happens again?