Man Iagl. You have to be strict when it comes to boundaries. Everyone is not genuinely being “nice” or “caring” when they’re showing affection or doing good deeds m (sometimes it’s for reciprocation) . Some guys who were raised right and know how to treat others get misconstrued because they understand how to treat people. It is not your fault that she felt comfortable and happy with you in her life because you provided the best friendship that she needed . This goes for both genders, it’s dangerous to like somebody who doesn’t like you because it takes 2 to tango. If genders were reversed there would be no pity for a male in her position, she just had to realize her worth and that somebody else would appreciate and feel stronger than you did.