What does it mean when a guy walks really close to a girl?

Anonymous
A guy and a girl (they don't know each other) are going in the same direction. There are a lot of people walking too, though enough space to not be against each other. As they have to pass a door, the guy starts walking right next the girl, their arms and shoulders touching. He doesn't push her nor moves aside even after the door. Then, he walks right behind the girl, his body is touching hers.

Later, when they pass each other in the corridor, he and his friends look her way. When he's not there, his friends notice her too. Though, one of his friends once called her a whore while passing her (without actually saying this face to face). The guy looks/stares at her when he sees her coming or when he comes her way but sometimes doesn't and completely ignores her or quickly look when he thinks she won't notice.

Why?
What does it mean when a guy walks really close to a girl?
6 Opinion