S-He doesn’t mean acting based on the feeling of love, but doing the action that promotes a loving outcome. Has the strength of being orientated towards love, without the weakness of unreliable emotion. Agape is a stronger basis than love as it means Christian love (selfless).
W-Love is subjective as everyone has their own view on what's loving, it's too unstable to base ethical theories on. Some Nazis believed they were doing the loving thing. With agape, C. Hitchens noted that loving your neighbour as yourself is only good, if the way you love yourself is good.