Boyfriend was hanging out with exwife before we became exclusive/serious. I feel betrayed. What should I do?

Anonymous
He leaves his old phone with old messages where I can find them. He says he doesn’t care if I look at them because he has nothing to hide. Well I realized that he was spending a lot of time with his ex wife. There was messages from before he met me about how he would always love her and do never give up on her. I asked him if he was still in love with her. He denies it. He says he tried to fix things with her before we met and a little when we first started seeing each other. But he gave up and decided to focus on me. He said I should focus on the fact that his feelings has become greater for me this past year. He finally told me loved me and I met his parents and family
Updates
2 mo
He said he wasn’t sure about me because I lived a little too far away (45 minutes)
Boyfriend was hanging out with exwife before we became exclusive/serious. I feel betrayed. What should I do?
2 Opinion