If you could and you knew you weren't going get found out

Would you look at your love interests phone? I looked at my bfs phone when he was asleep once. There were calls made to his exs on the days he bunked off college. By my estimation not only was i being bullied which was better when he was there he was also having booty calls with his exs on those days. He did cheat with someone across the road and he told me he cheated with a few more.