Guys, What does it mean when a guy put his nose on my hair?

I’ve only seen this guy three times. We met on a dating app. On the third date while we were watching a movie, he put his arms over me and put his nose and lips on my hair, he was sniffing my hairs. He did this for multiple times, said my hair smells nice. We haven’t made love but I know he wants it.

My question is does a man sniff and kiss a girl’s hair because men just usually like it and want to go after sex or is it something a guy usually do when he likes a girl? I don’t have much experiences and don’t know men.
Guys, What does it mean when a guy put his nose on my hair?
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