I’m gonna go with a different analogy on this and it’s very clear.

Do you love him?

If answer is yes then you need to “fight” because in our lives we truly love only few people.

Also, when it comes to “time heals” quotes and “love yourself” just be warned it has nothing to do in situations where you truly love someone. If you don’t “fight” believe me, life will make “coincidental” things happen in your life that will make you fight for this love of yours. When true love is in the air, you cannot escape it.