I love her.

This girl kinda sounds like a jerk, if that’s how she responds when you say you love her. That is, unless you’ve done something (or things) in the past that have caused her to lose trust in you. If you’ve never cheated on her, used her, hurt her badly, or seriously lied to her- I can’t think of why she would respond to you like that. My guess is that she doesn’t take you (or the relationship between you two) very seriously, which isn’t something you want to get mixed up in. You don’t want to have to answer “how high?” every time this girl says “jump”. I understand you may love her and really want to be with her, but chances are if she ended it then it’s what is best for the both of you. Trust that if she didn’t want to be in the relationship, it means it wouldn’t have worked out. Keep busy and try to stay away from her for a while as you heal from the breakup, good luck.