No trust

So my husband and I have been married not even 3 months, while we were dating he went through my phone while I was sleeping. I've told him I don't like it (past relationship reasons) well after Christmas we got into a fight, he told me he doesn't appreciate me all bc I got a d in a class I took. So I started smoking again, I quit 2 years ago for him. Well he took my old iPhone that was still logged into my fb and was reading all my messages. A girl I work with said something about me smoking and of course I told him I wasnt, so he was waiting for me after work. I know I lied and I'm wrong for it, but now he thinks I'm lying about more, he text me all day long, calls for an hour over his lunch. I wouldn't cheat but he doesn't seem to think that. Sorry just needed to vent!