Room sharing

PJ (age 11) was sick on Friday night. PJ and ER (age 4) usually share a room so we asked AM (age 8) if ER could share with him for the night instead. They were both excited about it. As expected, neither slept as well that night. Shabbos afternoon, walking home from a friends, AM expressed that he really did not want ER to share his room again. I expressed to  him how I appreciated that he was a kind sharing brother to have ER sleep in his room the previous night so he didn't have to share a room with PJ. By seudat shilishit, he was expressing that maybe one more night would be ok. By havdalah we parents had decided that PJ was recovered enough to move back but AM was begging for ER to sleep over one more night. It makes me happy when they want to help and share.