Just Let It Be as if He Never Loved Her!
Loving someone is undeniable, even if unspoken, it will manifest in actions.

Not loving someone is also undeniable; even if you deny it, he won't ignore your existence.

The things you do for him, he deems insignificant. He won't reject your efforts, but neither will he reciprocate. During arguments, you're always the one to lower your head. You don't initiate contact, and he won't contact you.
He demands you consider his feelings and those of those around him, but never considers yours. All this indicates he doesn't truly love you.

So don't be foolish, don't always drown yourself in despair, weeping in your room until late at night. When you're tired of crying, you'll sleep with swollen, red eyes.

There are many people you can love but can't have in this world. Some will choose to leave you, and others will come after you. You won't always be alone. Don't keep initiating, don't keep being submissive, don't keep persisting, don't keep waiting.