But try and talk to him to find out why he was upset?
I'll try and keep this short but would like some perspective as I'm obviously biased and hate to see my son upset.
DS (11) phoned me in tears from his dad's house last Thursday just before exh was due to bring them back and wanted me to come for him.
DS who is quite young for his age (and a big softy) started secondary school this September which involved getting the school bus. He was worried and asked his dad if he would wait nearby in his car while DS caught the bus for the first week. Ex said yes but then let DS down on the Wednesday to take his girlfriend to work. DS then asked ex to be there on Monday to make up for it but ex said no as he was going away for the weekend with his girlfriend.
So DS hasn't wanted to see ex since then and all ex will say is he hasn't done anything wrong and just shrugs his shoulders. He wont make any effort to speak or contact DS to sort this out ie stays in his car when bringing DS2 back.
I know it may seem trivial about changing plans but this is an ongoing problem and it isn't the first time that ex has put his girlfriends before his sons. He also hasn't taken them away at all this year so DS is upset that he takes his girlfriend but not him.
I've tried talking to ex but he's a very self centered person and just does what's easier for him.
So aibu?