I NEED ANSWERS!! Ladies in a relationship:

My fiancé and I always argue when it comes to his phone. I’ve never out of all the years we’ve dated been secretive with my phone or declined him to see my phone. But when it comes to his I cant because he doesn’t think anyone should go through phones even though he has went through mine plenty of times. Do you think it’s okay to go through your husbands, boyfriends, or fiancés phone? Should you guys have open access to each other’s phone or no?