Yes Munni, I posted this on a another thread also. First of all, it was okay to give him silent treatment for a day, but Rashi pulled the string until it broke, now he is not going to attempt to talk to Gopi, because he feels he has hurt her deeply so he is going to give her space.
If Gopi had started talking to him again, he would have confided in her, he has told her everything up to the point of the party and anger, and things would have smoothed out if he had been allowed to apologize.
So yeah, lack of communication is going cause them lot of pain and heartache.
At the end of this, they will both have realized what kind of consequences could take place if they don't talk to each other. This is one element that has been missing in their new relationship recently.