Trying to regain trust

Husband cheated on me in past and I’m trying to learn to love him again and trust him. He doesn’t seem to care rather I trust him or not and only brings up his issues with me when I try and talk to him about the way he goes about things. He leaves whenever and does doordash but I don’t hear from him for hours some times until he is on his way back. He takes 5 min showers so I won’t be left alone with his phone for too long. He gives me the silent treatment when he’s in his bipolar moods and I’m sick of it. I tried to talk to him and tell him how I feel but he said I’m too sensitive and that i deserve to get cheated on and he should be cheating because i accuse him of cheating and he’s a faithful nigga. I would never say that to him