Islam didn’t make it Haram for you to fall in love. It didn’t forbid you from wanting someone. It only guides that love so it protects you, her, your families and especially saves you from humiliation on judgment day. If you love her so much, why are you ok with letting her engage in this questionable relationship knowing full well that she will have to answer Allah just like you will. You don’t love her enough to save her from that?
If We had sent down this Qur’an upon a mountain, you would have seen it humbled and coming apart from fear of Allah . And these examples We present to the people that perhaps they will give thought.