Almost broke up with my bf because he thinks couples shouldn't have ANY privacy

I need to vent. My boyfriend believes that when you're in a relationship, there should be zero privacy. Whenever he suddenly leans over to look at my phone, I instinctively cover it. It's not because I'm hiding anything, it's just a reflex. I've always been like this, even with family.

But to him it's "proof" I'm being shady. We've fought about this so many times. It got so bad I finally just handed him my phone and said look through everything. He did. Found nothing. Obviously.

I've explained over and over that I just need personal space, but he always comes back with "well MY phone is open to you anytime so why can't yours be?" Cool, that's your choice, but you can't force that standard on me and then treat me like a criminal for not matching it.

I love him but the constant accusations over something so small are exhausting. Has anyone dealt with this?