Why are you contradicting your statement a lot. You told her that religion was not an issue for you in the beginning( your lie) just to get acceptance from her. You BOTH accepted a short term relationship and she told you she won't fall in love with you then you started telling how you can see the future with her, you even confessed you were in love with her and cried. So technically you lied to her first. She didn't lie, she was just naive to believe your lies. Now you don't want to continue because of religion, the same religion that you don't have a problem with in the beginning ( your statement). There are only two possibilities in your scenario. 1. You just wanted to use her 2. You are scared for a long time commitment. Work on yourself, girls are humans too, don't play with their feelings like this. If you don't intend to marry her don't give her false hope.