I think as others have said notthecatsmitger your DH is probably jealous of the time you give your DGC DGC, time that should ( in his mind) be his! It’s a bit sad really. If I were you I would carry on as normal as possible . Let him hide away upstairs or go out . His choice . Let him be a sad and miserable old git . Infact if st all possible I think you should go to visit your DGC as often as possible (even on Christmas Day if you’re invited ) . His choice to be on his own .
Never Ever Have I - Alphabetical