Only found out my partner has potentially cheated on me at the start of our relationship. A few months into our relationship I found old messages to his mate saying he is dying to have sex with one of his best girl mate and I know she did make dinner for him one night when I was out with my old friends at the time . I then seen another old message between him and my best friend at the time asking her to come down to his house for cuddles ect.. Obviously these are old messages from almost 10 years ago, which were at the beginning of our relationship. Currently he's a good partner and good dad to our kids. I trust him now but I was still abit annoyed reading those messages.. I don't think I'll bother letting him know that I've read the messages as its in the past anyway. What would you guys do??