Matrimonial life is for homogeneity and companionship. A wife is considered as half the body of her husband, equally sharing the fruit of pure and impure acts:- whether she ascend the pile after him or survive for the benefit of her husband, she is a faithful wife.As per your query the relationship with girlfriend become worst every day due to behavior approach and Egos. With out respect and companion ship ,love and affection no family life leads in prosperity.So think do you continue the relationship or not ?
Having sex with a girl on the promise of marriage and later refusing to tie the knot on flimsy grounds amounts to commission of rape particularly when the boy from very inception had no intention of marrying the girl.A case where the girl agrees to have sexual intercourse on account of her love and passion for the boy and not solely on account of the misrepresentations made to her by the boy or a case where a boy, on account of circumstances, which he could not have foreseen or which are beyond his control, does not marry her despite having all good intention to do so, has to be treated differently . If fully grown up girl consents to sex on a promise of marriage until she becomes pregnant is promiscuity. Having sex with a girl on the false promise of marriage and later refusing to tie the marriage knot may amount to commission of rape, particularly when the boy from very inception had no intention of marrying the girl.
If your girl friend committed suicide and left a note against you then you can be arrested under section 306 of ipc for abetting to commit suicide. In case if you had physical relationship with her , you can be charged for rape on her complaint and for breach of promise of marriage.
if she does not leave any note but her family and friends in their statement give your name as the cause of your gf suicide then also you will be in trouble .Even if she commits suicide without taking your name & some body informs police that you are responsible for her death, then also you will face serious problem,
What you can do ?
Register a police complaint regarding threatening for suicide, as suicide is a criminal offence police will take action.
File a police complaint against the girlfriend and inform local inspector local police station that this girl is having suicidal tendencies and her threat against you also informed that you should not be held responsible in case such a thing happens. Inform the same to her parents and also to make her to attend counseling.
Break the Relationship soon
1. You should never have made any promise of marriage.
2. If you do not want to marry her then you should not have continued this relationship. Before putting a person in such emotional turmoil you should have kept the uncertainly of marriage shared with her