Again I'm not getting in to who is more right in all of this mess but one thing that did glare out in the entire episode is how insanely they love each other.
I don't condone suicide but we can never understand what goes through someone's mind enough to judge their emotions. Ranveer had said not so long ago said that his heart has been broken so many times that if it broke again, it would stopped beating.
Who said its anything to do with Ri? Never was and never will be. He has lost his will to live because he can't take the heartbreak from Ishani anymore. She is his lifeline and from his perspective, that lifeline has been completely taken away from him...its shattered him beyond repair. Ranveer is ALL ABOUT ISHANI! Life = Ishani, Death = Ishani
Coming to Ishani. You can say she has no self respect etc etc. She probably doesn't but that's because Ranveer is beyond anything to her. This is a story about their 'Aashiqui', not your everyday love. He can accuse her of every allegation but she will come back with 'You can kill me but I won't let any harm befall on you'. She stood her ground and the only one who can change her stance is Ranveer himself. Again, for Ishani, Ranveer is her life and she would easily die for him.
I don't agree with their actions but today was true to that madness and intensity 'Aashiqui' holds.