Even when they do love you back, but it’s just not as much as you love them. Or as much as you need them to. Or enough to make that change that will make you happy together… for now.
Of course it hurts. But WHY does it hurt?
It’s not because you love them. It’s because you want them to love you.
In a very specific way.
It’s your emotions throwing a tantrum when they don’t get what they want.