Most Helpful Girl
.. because they are only loyal to their own priorities , needs and wants.
People can change over time. When they change, so do their feeling. Therefore, you are no longer what they need or want. You cease being important to them. So they have no regard for your feelings anymore , that's how they can easily cut you off without it affecting their conscience.
Most Helpful Guy
I know right like how could some who you thought you meant so much to just let you go as of you were nothing. and then get a new guy like 2 weeks after bruh like wtf.