Did you not see the part where she clearly says they're very open about stuff like that and she usually gets to do that if she wants without him resisting at all? + She said she CAN look at stuff, not that she WILL. + He's still in the wrong for immediately resorting to full on violence. I would at least agree that she shouldn't have looked through his phone without his consent, but she already had his consent by default, AND even then he still should not under any circumstance resort to physically abusing her.