Suicidal issue situation. Pg, plz help.

Your question is confusing. You say you were in relation with her for years, yet you do not seem to have any inclination towards settling with her; then why this sympathy? Have you been playing with her emotions? Were you using her for your convenience? What is the reason that you are now yielding to your parents' wish? Is the new girl more beautiful and more rich? A lot of doubts are cropping up about you and your sincerity. Yes if you have been close to her and you now decide to get married to another girl, then I cannot blame her for her present behavior. She must be emotionally devastated. Under the circumstances, I would advise both of you to meet a Clinical Psychologist and discuss your problem with him/her. If you have a genuine reason for deciding to marry your parents' choice, you may explain that to the psychologist.. Meanwhile, since you say that your friend has already attempted suicide, you need to take her to a psychiatrist and get her treated, as a first priority. Otherwise she may attempt again, and this time she may succeed; and you will feel guilty for the rest of your life.