Should i leave my secretive husband?

My husband became very secretive on our 3yr of marriage, its our 5th yr now, and hes still his secretive self. I remembered how i was able to use his phone, email, and bank like it was mine. He even said there shouldnt be any secrets and we need access to each others acct. But now its completely different. Hes always in our room, touching his phone, 24/7, while the kids and i are in the living room. Husband only comes to us when he needs to eat.

Ive talked to him about it, and he says its best this way, he needs his privacy. Otherwise, itll ruin our marriage. However, he always check my phone and email.

Yesterday we both got into an argument, and he said that anyone married to me will cheat on me, because i never give him any attention. I assumed that hes cheated, so i separated from him.

He begged me to come back and promise me he will no longer be secretive. He will give me access to his phone, email, and bank. He even wants to have a share acct.

I went back and hes still his secretive self. I talked to him about it, he got angry, and said he doesnt trust me, so its best for him to be secretive. I decided to be secretive too, and he was angry about it. He accused me of cheating.

I feel like hes cheated already many times, i just dont know.