Definition
to end a relationship with a person in favor of starting anew with someone else
分手，另结新欢
He decided to throw his old love over to start a relationship with his new girlfriend.
他决定抛弃旧爱，开始与新女友的关系。
She felt thrown over because his affections had shifted to someone else.
她感觉被抛弃了，因为他的感情已经转移到别人身上。
In this relationship, he always seemed ready to throw me over, which was truly disappointing.
在这段关系中，他总是看起来准备好抛弃我，这真的令人失望。