Dd (16) announces tonight that she is going to town with - lets call him shaun.
So i say isnt shaun 'katies' boyfriend?
Yes but hes my friend too says dd
Me and dh say its not appropriate to go to the cinema with your friends boyf when she doesnt know
Dd says things have 'changed since your day' 
so ive told her she needs to message him and say 'sorry cant do this weekend shaun, but woud love to see you and katie soon'
Shes in a strop now.
So AIBU