After class, you took the bus. But turns out, there is no seats left. so you had to stand

You pressed against the wall of the bus to increase distance between the crowd people

When the bus turned, you suddenly felt someone's pressed against you. You felt the warmth breath on your neck.

He pressed his body to your lower back. As you turn around you saw the quiet boy on your class.

"Oh sorry bout that, I didn't keep my balance"