I decided to end my 20 year relationship a few months ago as he was just lazy and uninterested in family life. We have 2 children age 4 and 7. 3 weeks after the split I found out he was taking the children out with another woman and her child (she is a single mum) he only has them one night per week and although I admit I am a bit bitter, shouldn’t they be spending quality time with him instead?