If your looking for the word that means caring about someone beyond all rationality, and wanting them to have everything they want, no matter how much it destroys you, ITS LOVE!
And when you love someone, you just... you don't stop. EVER.
Even if people roll their eyes or call you crazy, even then. ESPECIALLY THEN!
You just, you don't give up!
Because if i give up... if i could just, you know, take the whole worlds advice, an-an-and move on and find someone else, THAT WOULDN'T BE LOVE!