Wtf should I do

Okay so I know it’s wrong to snoop on your mans phone but I did, I was curious what the conversation was like between him and his baby mama (now she’s in jail). So I looked and found that for the first month of us being together he was still talking to her and saying that he would leave anyone for her. And the only reason the convos stopped was because she stopped answering him. We’ve been together for a year and a half now and have a baby together, when he was telling her these things I had just found out I was pregnant. I don’t know if I should bring it up to him or what? Either way it really fucked with my feelings. All I saw was his Facebook messages with her, his text messages had been deleted so I don’t know how long it actually went on.