Love is not love that alters when it alteration finds.

Affection that depends on the other person staying as they were is a conditional arrangement wearing the wrong name. People change, through illness, failure, age and simple time, and what is described here is a commitment that treats those changes as the ordinary terms rather than as a breach of contract. The test only arrives once something actually alters.

That is a high standard, and it is not an argument for staying anywhere harmful. Applied honestly, it asks what conditions you have quietly attached to your own affection. Notice whether you are currently withdrawing warmth from somebody because they are not doing well.