He could just ask her whats going on. If she lie then its his fault for being with her. Bottom line sneaking around looking through the phone shows that his old wounds havent healed yet. He shouldnt even be in a relationship.
its never really your fault that somebody lies to you. its your fault for trusting them which honestly you can never really know if another person is lying or not because you don't know what they're thinking.
That cell phone contains more information about the real her than you'll ever have access to on your own. its a glimpse into a world that normally you don't have the ability to see because its the world that exist in the absence of your presence.
people tend to not do any housekeeping on their text messages because nobody else but them is supposed to see them. usually their text message inbox is a written record of all their dirt.
you can sit up there and let that female logic of you don't look at that shyt fool you but truthfully that's the logic they use on men cause a female will look at your shyt in a minute. its not feminine to go through another person's phone the feminine shyt comes when you go through the phone find dirt and get emotional about it and confront them trying to force them to stop what they're doing or honor you when they were lying to you.
i used to be just like you until one day i did look and i found out the hard way that the truth is out there and its happening despite your knowledge of it. you not looking in her phone isn't gonna stop the cheating that's going on its just gonna make you ignorant about it.
i'll look through a chick's phone in a minute because honestly i don't trust them and i wanna know for my own purposes what they're doing behind my back. at the same time if a caught a female going through my phone i wouldn't be mad at her at all. i got nothing to hide anyway. if i go thought a chick's phone and find her talking to other men behind my back i'll break it off with her the next time i see her. no confrontation, or explanation just tell her its not gonna work and we're through.