Split with stbxh at the end of last year.
He moved into a studio flat so wasnt able to have our 2 teens overnight but he saw them here quite often. The OW and him became official at Easter. He moved into a house with a view to being able to have the teens overnight etc. OW does not live with him.
Anyhow I have hobby and have a few weekends away booked with it and asked him to have the teens. As they wont have anything to do with OW it would need to be him and them - again agreed.
Fast forward - am away this weekend - he is having a party at his which OW is coming too. Teens wont go now and so they are home alone and happy about this (are 16 & 17). Sad that their Dad has choosen OW and his friends over them.
Am away again in 4 weeks time - again checked yes he would love to have them over. Guess what he has just called - hadnt tied dates up and has booked something with OW. Again boys wont go over and will be home together instead.
Just feel for them. Btw when I wanted to change the evening they visit for dinner for one night due to one of them having a school thing on, I got called awkward - pratty man.