Do you mind if a girl falls asleep on your shoulder?

We were on a road trip and I was in the back seat with my friend and I ended up falling asleep for about an hour. I told him that I may fall asleep so just shake me off and push me to the other side. When I woke up he had his arm snaked around my waist and his head resting on mine. It didn't bother him right? His reaction was normal?
Do you mind if a girl falls asleep on your shoulder?
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