Just looking to see whether AIBU here.
My two DS (15 & 20) live with us full time. DS20 works full time. DS15 obviously still at school. DSS21 is at uni, comes over occasionally for the day to see his Dad, but otherwise is at Mum's. DSS19 has been travelling in Oz for the last year.
DS20's mattress is a bit uncomfortable so I swapped it for the mattress in DSS room which is more comfy, and DSS has slept here once in the last year.
DP has gone mental and accused me of 'pilfering' from DSS room. How he wants his room to be kept as it is and that DSS may take that mattress to his own home one day.
I've said I'll put it back and buy DS20 his own, but it means splashing out on a new one leaving DSS's sitting in his room unused for 99% of the year.