My mother and step father have invited my ex husband to go on holiday with them for two weeks at the beginning of October. Our 19 year old daughter is going too, but I'm really confused and upset about it. I don't understand why you would want to take your ex son in law on holiday even if your granddaughter is going. She cannot and will not understand how I feel. When we were married she didn't like him, found him difficult to talk to, and said I should never have married him. I've tried talking to her but she thinks it's perfectly acceptable. Sleeping arrangements are strange too - it's a one bed apartment with a double sofa bed in the living room! I'm glad my daughter gets a holiday but I'm really struggling to understand why he's been invited and why he's agreed to go.