We're on a family holiday, DS (14) playing a game with DH on phone when he sees a thread between DH & unknown woman. He comes sobbing to me at the beach & tells his sister (17). He did not confront his dad or say that he had seen anything. I feel sick but not completely surprised, we are not happily married, bicker constantly & zero sex life for years. I remained calm & asked him he had to explain himself to the kids and left it at that. He originally denied anything and he later told them we have a "complicated relationship" & and old friend had got in touch (never head of her & we've been together for 29 years). The last time I knew of this happening was when I was last pregnant. DD also caught him watching porn in a full house recently. He clearly isn't happy & neither am I. DD says I should leave him. We haven't really spoken since the incident and now getting ready for an awkward family dinner. Needed to share as too embarrassed to share with anyone else. I feel mad & sad. Is it time to say goodbye to us?