Just Want Him to Love Me

I work in a busy retail store and take care of my partner who's been ill for months now. I try hard not to show how tired and drained I am, but tonight, after he fell asleep from his meds, I slipped into the little girl role we play sometimes. He’s 18+ and so am I, but in that moment, I was just a scared kid who needed someone to hold her close and tell her it would be okay. We didn't do anything more than cuddle and talk softly about silly things until he fell asleep again. It felt good at the time, like having a real protector instead of just a caregiver. But now, as I'm sitting here alone in the dark kitchen after work, I wonder if this is normal for someone my age to feel so childish with their partner? Do others seek comfort from role-play too when they're overwhelmed? What should I do when I feel like I need more than just support?