How to know if your fiancé is cheating a text?

We’re always together only one we’re at work or not he’s good to me, but I feel like somethings up with text messages when I ask him, he says I don’t trust him and then we can fight so it’s OK for him to do that to other people and not say anything to me. I think it’s like a big secret. Maybe I’m just overthinking. I know what to do should I let be will get married in August of next year? Maybe I should let be he very good to me I know
How to know if your fiancé is cheating a text?
Post Opinion