Girl: logs onto Facebook, see's he's online

Girl: logs onto Facebook, see's he's online. goes to click his name then stops and thinks to herself. . . 

"If he wants to talk to me, he'll talk to me"

Boy: see's she logged on, goes to click her name then stops and thinks to himself . . .

"If she wants to talk to me, she'll talk to me" 

Two hours later, neither of them talk to the other in hopes that the other would first. Both cried themselves to sleep that night. 

Go for it and take risks. Because if you don't, you'll never know what could've been.