Girl recently joined work on a freelance basis but she knows the boss well and they always have a laugh together. They were arranging drinks. She asks another colleague who sits opposite me - "what are you doing tonight? Would you like to come?". Colleague says she can't but AIBU to feel a bit put out I didn't get an invite? I wouldn't have gone anyway, but I just feel a little meh about it, I know it's my hormones but still.