Pls suggest me solution my following problem-
I have a 2 yrs long relationship with a girl.... everything was going nice. 1 year ago she shifted another place for study in college. Gradually her behaviour started change, her phone always busy nd she started ignoring me...but she never confess about this new person in her life ...she always said she love me and that person is just friend.....but she started hiding her phone when we met....nd her behaviour changed a lot .....I saw some pics of her with that person going alone on trips at hill station and all..... finally she confessed that she fall with that guy....but that guy was not giving her any surety of marriage (in Indian society it's a big concern) ,but I was committed to marry her even met her parents also.....she confessed that she committed mistake and now she want to come to me......after some anger I told her that okay I am ready to restart relationship with her.....But her behaviour never changed she always with in touch that guy....she told me that she is using for that guy just for her work .....but I felt that she was using me also for marriage purpose coz I have a secure career with descent job and that guy is unemployed......I gave her many chances but every time I caught her with that guy......but she saying that she love me......I love her very much and don't want to lose her....I went in depression due to this and taking medication....what should I do? Pls guide