My OH has a hatred of paperwork and gave me carte blanche to deal with a large box of his old post - got halfway through it and found a letter from an old friend of his (I knew her too). Turns out he slept with her whilst they were on a group holiday, the letter is her saying how angry she is with him for treating her like crap.
This dates from about 8 years ago, we had been together about 6 months.
I know it was early on, and it sounds like he gave her the brush off in my favour. But we were definitely in a relationship at that time, and he has never mentioned it. Also, I know that some of our other friends must have known.
I'm at home with the baby, and he's not home for a couple of hours. Feeling pretty crap (tbh, 8 months at home with a baby hasn't exactly done wonders for my confidence or our relationship). Could do with a bit of hand holding please!