It's about taking someone for granted, always a dangerous thing in a relationship.

这是关于把某人视为理所当然，在一段关系中总是一件危险的事情。

" To take (someone) for granted" means not to appreciate what another person is doing, to not appreciate his or her actions or behaviors, to not thank them, to not recognize that they are doing something for you.

“to take (someone) for granted” 是指不欣赏另一个人所做的事情，不欣赏他或她的行为或行为， 不感谢他们， 不承认他们正在为你做某事。