"Jesus answered and said unto him, if a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him."
This is cool because it illustrates, from both God's side and our side, that Love requires action. If we love God, we will want to be with him forever, and so we'll do what it takes to be there, which is to follow his words. And since God loves us, he wants to be with us as well, and when we are open and allow him to enter our lives, he is there with us. I think that too often we profess love when we aren't willing to take action... aren't willing to do the work to make the relationship work; or perhaps we profess love, but don't act on it because there is something else that we love more. I'm sure that our professions of love are sincere, but they will never take us any nearer our ideal or the object of our affections as long as they are mere passive proclamations. When we truly learn to love God, we won't let anything stand in the way of being with him.