My daughters father and I split up in 2012 but still have contact when the girls see him (generally 1 or 2 times a week). At the beginning of April we had an argument so he cut all contact with me and the girls for a couple of weeks. My eldest daughter's 14 birthday was in those 2 weeks so she didn't get to see him then which really has affected her. Now that we are talking again and my youngest daughter's birthday is at the end of July he's already talking about plans for her birthday. This has obviously caused upset with my eldest particularly as she's closest with him. Do I say anything or just let it go? He has done things like this at Christmas - gone on holiday just before Christmas so they didn't get to see him then and he tends to go on holiday the week they go back to school in September.