I decided to never invest too much emotion in one thing. It's always a set. Up to the pain of losing them.

我打算再不对任何一件事投入过多的感情，不然就会中了失去和痛苦的圈套。

youdao

Instead you should "trim" the emotion you invest so that when you eventually break up you won't end up hurt like hell.

如果你想拼命挽回这段感情，投入越多，最后你受到的伤害就越大。

youdao