My husband's first wife did exactly this. She had, what I now suspect was an MLC in her late 30s, leaving H with 3 children 5, 7 and 11. She moved in with OM who was in his late 20s and really had/has some issues (mental health very so so). She got pregnant within a year or so and had the baby, limiting her availability to the other three who basically lived permanently with their dad.

Nearly 20 yrs later and lots of insecurity still between kids and mum. The child is now in her mid/late teens and has some big issues too, which I can only think comes from the drama within which she spent the first years of her life.

XW and OM are still together, but she admitted to me once that leaving H and having another child was the most stupid thing she has done in her life and she will have to live with the 'punishment' for the rest of her life.

It's actually a very very sad story.

V

Never make someone a priority, who makes you an option.