Just collected ds (14) from friend#1( calling him that so not to give names) house after their 14th birthday gathering with several other friends. Ds stood at the door, friend1 mum appears at door too saying ds v tired and she hasn't even cut bday cake yet. Another mum arrived, with her dog (these mum's hadn't met prior to today) and friend1 mum asks her in for cake. I ask ds if he is tired or wanted to just stay to sing happy bday, he replied he wasn't tired and nobody else going to later so could he stay, so I say to friend1 mum that ds can stay a few mins to sing happy birthday ( I wouldn't impose any longer and would have stood outside to wait for those few mins if need be!) etc to which she replied no it's ok! Felt slightly lost for words, ds and I head to our car and I drive us home. Ds has health issues namely cystic fibrosis and CF related diabetes but he is capable of injecting and taking his medication when he eats. He's been quite poorly lately so I know I'm probably a bit overly sensitive to stuff like this but I just feel a little bit hurt that ds wasn't invited to sing happy birthday... it really feels they couldn't wait to get rid of him yet invite mum and her dog inside :/ He's a good kid and upbeat despite everything he has going on. AIBU to feel like this, how would you feel?