Karen Koster joined Ray for thsi week's Tell Me I'm Wrong.

''Hey guys, myself and my boyfriend have been together for 6 years.

Recently, he found out I slept with someone else in the first 3 months we were dating.

This happened once, we hadn’t talked about being exclusive at that stage and I really didn’t think it was a big deal.

However, since he found out, he keeps bringing it up, especially when we have a row. Sometimes he’ll mention it as a joke but it’s getting under my skin.

I don’t feel I need to apologise for having a normal dating life before we officially became a couple.

TELL ME I’M WRONG.''