When you observe that your girlfriend is increasingly becoming disrespectful towards you, what she's most likely doing is to frustrate your life so that you can break up with her.
And then she can blame you for breaking up with her.
End.
@guideforlovers People dont always leave relationships for the reasons outsiders expect.
Don't waste your energy comparing yourself to someone's past.
If someone chooses to walk away from you, accept the decision, protect your self respect and keep moving forward.