She hands you her phone while she’s driving
You shouldn’t go snooping through your partner’s messages when she’s not there, but if she hands you her phone without being prompted, you’ll know he has nothing to hide. “It’s not like you should go and check up on somebody, because that makes you the police, and that’s not healthy,” Feldhahn says. “But it’s to just know ‘I’m an open book in technology and if you happen to be there, there’s nothing I wouldn’t want you to see.’” On the other hand, being guarded about your phone could be a sign of cheating.