What does it mean when a guy rubs your back while you are puking?

I met a guy and before I left him at an airport I was partying with him.. We did not have sex because his friend has a crush on me. Anyways I danced with other dudes and he said, "You sure do love playing with fire." and I couldn't help myself and I kissed him on the cheek. When we were on our way to the airport. I said to him, "I know you like me even though you are pulling off that being distant sh*t.". He allowed me to hold him and lay my head on his shoulder. When we arrived at the airport, I started puking and he rubbed me on my back. He said to me that we better stay in contact through Facebook and then left to take the plane with his friend. Can anyone explain this behavior ? Is it pity or is it genuine affection?
What does it mean when a guy rubs your back while you are puking?
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