Maybe she found out you are on here to meet someone to 'fill the empty void' in your life......

Or just quote Carl from The Farce of the Penquins.
Offers some great insight into how to approach and talk to The Laydeeeeees.

And I still think she's pissed off with him for being on here to find someone else to fill an empty void......

PMT?

you need to know what her problem is, if there's no communication then how can you fix something. if she's not talking then that's a pretty good statement that she either hasnt figured out what's wrong or she doesnt want it to work.

that might not be helpful but it's something to consider.

if there's a genuine problem then be patient, girls can sometimes be a strange breed, and think things through a lot differently to guys. dont rush her, listen, understand anything she says. ask questions about how she's feeling. She probably doesnt want solutions, just to know you understand her.