Why do guys like stroking girls' arms?

[Anonymous]

I just noticed that usually when guys put their arms around a girls shoulders, he usually strokes her arm, even if she's just a friend. Why do guys do that? Its almost always happened

[Steven5-0Henderson]

that's a good question... I tend to do that, but I have no idea way..

[snowangle]

I don't know but they should never stop.

[Iron_Man]

No one wants to rub a girl with hairy arms