I got a call from someone telling me that my other half has been sleeping with his wife. I didn’t confront my partner straight away because I wanted evidence and waited until he was out to call back. Anyway, the person gave me screenshots of messages between him and his wife and it’s my partners picture and number. I also looked at the dates and it was when I was working (my partner works shifts so is at home a lot during the day).
I ended up confronting him and he says he’s been set up and that it’s his jealous ex girlfriend. I’ve been cheated on before in the past badly and he says I need to trust him and he’s not my ex.
What do you think? Am I being naive if I believe him? Or am I being oversensitive because of my past relationship?