Since you think your predecessor was love rat, your girlfriend must have been hurt in her last relationship, and maybe she hasn't fully recovered. That doesn't mean you can't let go of that love rat. And you also said that you are not from the same place, so even if you are in love, you have not been with her all the time. Maybe she has never felt safe. This sense of security does not mean that you didn't give it to her, but that your feelings hurt her. Suspicion and non-communication are taboos in feelings. She has clearly told you that if you like her, please believe her, and her circle of friends has not blocked you. This is aboveboard, maybe it's an outlet. Of course you're unhappy. Even if it is ironic, you certainly don't want your girlfriend to think or talk about things related to your ex. You can communicate well with your girlfriend, say what you think, like her, trust her, and let her learn from you with your love. Besides, if she really lied to you and didn't let go of her predecessor, love rat, then you also have the right to choose. I still hope that you and your girlfriend can always be happy. Come on!