Background. By marriage family member has a fiance, they have been together this time around for 7 years. They were childhood sweethearts, she got pregnant they were way too young so split up. They both met and married happily someone else. Fast forward nearly 30 years, her OH cheated on her so they split up, childhood sweetheart came forward to get to know his daughter, family member fell in love again with him.
A few months ago she found out he had been cheating for a couple of years with someone else. They got through this.
We were at a big family event yesterday, he went out to his car I was within hearing. He got his phone out of the car, punched in some text. Then dialled a number and quickly said. "See you later mate".
It just looked shifty. Now they both have no idea the family know about the cheating we were asked and all agreed to pretend we did not know. The thing is should I say anything, His own brother said he will do it again, hence my suspicions.
Sorry for the long post, but I know y`all hate a drip feed.