It will not only drive her crazy, it will push her away. I guess if your intention is to push her away, you could do that. Lots of guys do it as a way to get rid of a girl, but it is neither mature nor the mark of a person with any integrity. It’s weak. If you’re doing it to play games with her b/c you like her and want her to like you, then it’s also weak, and it will get you the opposite results that you want. When people have done this to me in the past, the ones who wanted to break up got what they wanted, and the ones who didn’t want to break up lost me…I never wanted to lose them, I just always give up instead of doing the chasing….b/c I feel as if they aren’t interested or they’ve lost interest. All in all, a bad move on a guy’s part.