Forgot To Brush His Hair When Told Not To

So I'm this mommy who's into DDLG stuff. It's been a while since my divorce and I've really gotten into this dynamic with my partner, who pretends to be all little boyish and needs me to take care of him like he was...well, you know what age but let's just say under eighteen because that's the rule here. So everything is totally consensual and we're both adults, it's just a fun thing we do sometimes. Yesterday though? I feel like such an ass for this. We were playing around at home and he asked me to give him some chores to do before bed, clean up his room, brush his teeth, you know the routine. One of them was brushing his hair really well since it's a bit tangled from all that playtime we've had lately. I did everything else but somehow just forgot about the hair part. I mean, how hard is it to brush your own hair? But he came out and asked me why my little boy looked like a bird’s nest in the morning light. It's embarrassing because usually I'm on top of these things when we play. We had this moment where we just laughed about it for a bit, he said it made him feel like such a big kid again, with messy hair and no care what people think. Then he got all serious and told me to take care of his mess since I was the one who let him forget. He started joking about how my mommy skills were slipping. So then we had this weird moment where it felt really intimate, like we weren't just playing roles anymore but actually taking care of each other in a way that feels deeper than just our little games. After he sat still for the longest time while I brushed out all those tangles, smoothing down his hair until it looked presentable again. I guess sometimes getting distracted from rules can make you feel closer to someone if they understand and don't take it too seriously either. It's like we shared a little human moment of forgetting or being silly, nothing sexy about that, just really sweet in the way we look out for each other even when playing these roles.