cracks have already developed and it is beyond repair and now you have decided to break. you know at any cost the relation will not improve so better come out of this relation and move on. if not happiness you will definately want peace and want to protect your parents too. if you are right and you have not done any injustice nothing can harm you. ask yourself. practically, it is not easy to come out of all this legal cases. abetting suicide is also offence. i would advice peaceful negotiations for parting instead of litigations.