I will second MrBond's comments... My X said those words to me and there wasn't somebody else. I think perhaps there was a vision of who that someone else would be, but there wasn't actually someone.
There are a thousand reasons for the WAS to start walking down the path they choose to walk. Some valid, some not, but ultimately they are valid in their perception.
Married 6 together 8 Me:38 W:31 second marriage for both SS12, SD10, S6 Bomb: 9/8/11 (day before our 5 yr ann) W moved out: 2/18/12 D final: 11/12/12 Share S 50/50. Spend as much time as I can with SS & SD