How do guys act around girl they like?
This is f*cking A-hole moment of every boy, that's a big trap sadly no boy will notice.
He enters into the character of a most joyful, happiest, lovable guy of his gang. He makes fun inorder impress his crush, sometimes his fun turns into lame jokes and he won't be noticing.
Some boys will avoid the girl inorder get her best attention, yes sometimes they taste their own medicine.
Introverts play with eyes,
Yes, girl's will be impressed with their moves. A girl will observe every move so introvert will make every move on his chess board with great accuracy and will make checkmate when he knows he has done his job.