If you loved her back, she would feel a thousand times better. If you held her hand, she would warm up in the cold weather. If you asked her how her day went, she would finally smile a genuine one. If you took her in your arms, she would hold you closer. If you checked up on her every day, she would never feel lonely.
If only you loved me that way. But you never had. So I have never experienced all those feelings I would have felt
If only you had loved me back.
those "if only" feelings, which sadly, but honestly, keep the little flame of unrequited love alive.