Help, my boyfriend took away my access to his phone, laptop and changed his passwords and my anxiety is going in to overdrive what can I do?

I've had his passwords since early on because I have bad anxiety about being cheated on and regularly check it, anyway lately he's told me to stop going through his messages but I just can't help it and he told me I do it again and he'll change it all so I tried being more discreet but he realised that some messages that he hadn't seen yet are marked as read and confronted me and I broke down and cried and admitted it so now he said he's going to make me go cold turkey and learn the hard way since I can't be trust not to invade his privacy.

I need that access back how can I convince him? Please help my anxiety is going nuts!
Help, my boyfriend took away my access to his phone, laptop and changed his passwords and my anxiety is going in to overdrive what can I do?
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