lets not compare this to typical suicide scene, where is deliberately harming while in complete senses. Instead as seen today he is hysterically mad at her. May be in fit of anger he may harms himself, and I see this as positive turn, as this is very much needed to make Ramnath see the repercussion of his act.
Only a hurt Shravan can put some sense back into ramnath. So please stop being negative and see it a progression in story .
I know suicide is a sensitive topic for many, but I don't think it will be a concious decision by shravan
Just my opinion...