I am in a relationship with a girl from past 4 years ,but every time i used to suspect that is she is dating to some other boy because mostly at night between 9 to 10 her fone was always busy but whenever i asked her about this she used to say that she is talking to her friend (girl)and i also has no proof of it so we ended up miserably and broke up but after seven months of our break up she is now insisting me to be with her again so what should i do ?? please help me with this