Love is.... kind.
Not only when it's in a good mood. Or when things go right. Or when people are nice. Not only when it's convenient; but sometimes, even when it isn't.
Love is kind.
As Strong's defines it: Loves shows itself mild. It's kind. It uses kindness.
It's pleasant (as opposed to hard or bitter). It's better. It's beneficial. It's useful. It's easy. It's good. It's gracious.
It isn't mean. It isn't bitter. It isn't vengeful.
Love (no matter what's done to love), Love (no matter what) is always still kind.