" Conditional on the object of our love remaining a decent human being." Real Love does not suddenly flee because the person turns out to be a disappointment, or even a right bastard.
Yes, we may decide to have nothing to do with a toxic person, a criminal etc, but that does not eradicate the love, or it was not real, unconditional love. We impose conditions upon contact or whatever, but the love, if real is still there. Just as the love for a person who has died is still there, even though the person is not.