Long story short. We had a get together at our house today - a casual stay as long as you like thing - with drinks and a buffet etc. I invited one of my best friends and her DH & kids who lives 10 minutes away (let her know weeks ago). She said they won't make it as are too busy prepping veg and wrapping gifts every Christmas Eve. Fair enough (20 odd others made it though) then I see Facebook pictures uploaded of her and another friend clearly having a drink and great time. Do I feel hurt? Yes. She obviously wasn't too busy to come. Would you mention anything after Christmas or just leave it and realise your place in said friends life?