Been with this girl for just over 3 years. Earlier in the year she wanted to get married, we even viewed a few places but something didn’t feel right. I just thought I wasn’t ready.

A few months ago, crying late at night a bloke at work kissed her. Later saying that she sorta liked him and kissed him twice. Although she couldn’t remember saying it when confronted.

Fast forward to a few weeks ago i got suspicious and found on her second phone messages between her and another guy she works with, she’s sending nudes, talking about kissing and playing with each other. Bare in mind the guy is married with kids.

A few days ago when picking her up from the bus stop, driving by she hugged another bloke she works with. She doesn’t normally hug anyone.

We have been going through a rough phase with work and life being busy. She has kids which I’ve gotten sorta like a father figure to the youngest one. She booked a winter holiday for a few days and I’m stuck on what to do. Do I confront her? Stay for the kids Christmas. We’re not married, we have separate houses, (owned before dating) and no biological kids together. This is my first serious relationship and don’t know what to do.