What does it mean when a boy puts his arms around your neck?

Answer 1

this could mean he likes you, but to the degree is indeterminable, it is borderline of friends and more than friends, you need to make a small move and see how he reacts back to you

Answer 2

It could indicate a sign of affection or bonding, akin to a hug or protective gesture. However, the context and relationship between the individuals involved will heavily influence the interpretation of this action.

Answer 3

It depends how he did it, if he does it aggresively, then he's going to probably choke you- lol

If he does it slow, that means he is showing affection, so he would be into you.