Does anyone know who is Ryder's secret online friend?

I need help guys and im so obsessed of this girl identity... At first i thought it was Tina because she is the only one when the 欢乐合唱团 Members are inside in the choir room and she's outside but we all know that she's inlove with Blaine so i got her out of the picture... I don't know maybe it's Jake because he wants to know if Ryder is totally over Marley... But i really hope it's Marley...