DH is out tonight. Someone at work is celebrating their 40th birthday.
They went to a golf club this afternoon and had lunch and drinks after. They’ve now gone into London. DH has just messaged me this:
‘Don’t wait up for me. I’m not coming home.’
I asked why.
His reply ‘crashing at work mates flat because it’s closer’ (he then said where it was. It’s 3 stops on the train before our stop. 
AIBU to be annoyed at this??