My dss will only see dh alone at mil house. Normally on a wed or Thurs. We have arranged to take mil out for a meal Friday and after getting garden done this week we have been saying all week about just me dh and our dd having a BBQ sat getting slip and slide out playing games we have all been saying all week we can't wait til sat. Dss rings dh tonight saying I can't do wed, Thurs or Friday can we go Nan's sat? He says fine mate see u then. Aibu? He would never cancel plans with dss to do something with us. As I've said to him tonight if dss has plans with his mum and sisters he would never cancel them to see dh even if it was the only night he could see him in week. Our dd was looking forward to sat and is gutted he doesn't care his answer is I have to take the opportunity to see dss when I can. My view is dss only sees him when he has nothing better to do or needs cash. He's 19 and dh ends up giving him lots of cash everythime he sees him always needing new trainers etc tbh dss has learned from his mum to use dh for cash. I'm just pissed he wud cancel on us but wud never do same to dss