asalamu alaykum. dear brother i don't want to offend or hurt you in anyway, but if you are muslim then why did you even start this relationship girlfrien/boyfriend? why did you treat her like a wife, instead why didn't either get married or stop fooling around with her. possible reasons.....hmmmm, maybe the mother thought that you were using her daughter as a toy, you know those girls whom you fool around with and later you depart from them. now if the girl is muslim, then maybe it's because her mother realized that following the correct way of islam was better for her daughter. if you are muslim and the girl is not, then it could be that she doesnt want to see her daughter with a muslimg guy. Please brother start studying the deen, use your time wisely, and don't be a play boy...rather be a man who is steadfast in his deen. now you might see this to be entirely boring but the ticket to paradise is expensive. You were created to worship Allah, and Allah has given all of the chance to reform ourselves and be good devoted servants but know that if you continue to play around, and to live life as if there is no akhira, then you fall into a ditch and once you die there is no second chance! IF she wasn't that good of a muslim, than forget about her and try to realize that life is full of obstacles and that Allah is watching you. Dont' let shaytan play with your mind, because when he defeats you he laughs at you and on the day of judgement, he'll say that you're all on your own. please try to be a devoted muslim, one who thinks of akhira, who does he's duty for Allah's sake and who is obedient to his parents. as for the girl, if she is meant to be your future wife she'll be and if not she'll not be. but becareful and stop the whole girlfriend thing. you can date her according to islam, not according to man made laws. JazakaAllahu khayran. asalamu alaykum. sorry if i have been offensive, that was not my intention.