Husband emotionally cheated, won’t let me see his phone

My husband emotionally cheated on me for a year but I am choosing to TRY to forgive him. I am pregnant and I love him. He has shown me he would do anything to win me back, he is absolutely not getting off easy with this. Don’t get me wrong, I did originally plan to leave him, and he knows that if he messes up again I will leave. We are both in individual therapy but plan to start couples therapy soon.

A part of winning my trust back was access to his phone. I don’t mean looking threw it every day, or secretly look threw it. I mean that if I’m ever having bad anxiety, I can ask to see his phone to make sure he isn’t cheating. He agreed to this. He has ALWAYS had full access to my phone, but i never had access to his. Since this agreement I have looked at his phone once and that was after I caught him cheating. A month after I caught him, I asked again if he could show me his phone. He threw a whole fit and refused to let me, I eventually dropped it. Another month goes by, and last night while watching TV, I VERY politely asked to see his phone and told him he can hold it and scroll for me if he’d prefer. He said no. Came up with a bunch of excuses about how this is controlling and his therapist said that I am his slave now(he’s lied about things his therapist has said). He brought up how since he got caught he’s been helping with chores, helping feed the dogs, making me dinner, etc (the bare minimum of what a “regular” husband should do. He’s only works part time from home.). He also kept saying how he’s doing everything I ask of him (which really isn’t much, I am simply asking for bare minimum that he refused to do before I caught him). But he’s putting his foot down on me seeing his phone, he said that he will do anything else for me aside from allowing me to see his phone, and that I just need to trust him.

Before anyone says it’s wrong for me to check his phone. 1. I ASK to see it very politely 2. He is an amazing liar and actor. As much as he tries to prove he has changed by doing things for me, he can’t be trusted by those actions alone. 3. The phone is what he used to cheat on me, he is very protective of it. 4. He has secretly searched my phone while I was sleeping