Guys, if a girl wraps her arm around your arm, what does this response mean?

Featherlove
I was walking with my crush and I wrapped my arm around his to be a little closer to him after spending the day together. I noticed he put his hand in his pocket, and making this closed semi circle with my arm still around his - we walked like that for a few blocks. what sign would you say is his body language in this situation?
Guys, if a girl wraps her arm around your arm, what does this response mean?
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