Guy let me fall asleep on his shoulder?

We were on a plane and I am terrified of them, he sat with my (changed seats to sit with me) and after I was looking out the window and repeatedly telling me to stay calm, he grabbed me by the waist close to him and grabbed my hand. I then got calm and said I was sleepy so I tried to get comfy on the other side of the seat (not his shoulder) but I couldnt so decided to do it quick and put my head on his shoulder. I had some hair in my face so he took it and caressed my face a bit while putting it out of the way and then put an arm around me while grabbing my hand with the other. I then started falling asleep and he put his head on top of mine. We were like this all the flight. Plot twist is, he has a girlfriend, but he had been following me and very close to me a lot of the time before the airplane flight (we had gone on a trip with more people). What could it mean?
Guy let me fall asleep on his shoulder?
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