Quote Controversy - Should Love be Taken for Granted?

When Edwin and Mamah are married he says to her "Take my love for granted and I shall do the same for you."

I can't decide what I think about this idea of fully taking for granted that you are loved, especially by a significant other. I think I've always thought that it is dangerous to take love for granted, it seems a) arrogant to assume that no matter what you do this one other person will always love you and b) ungrateful to brazenly expect that person to give you that level of unquestioned security. Things you take for granted are easily forgotten about and that sounds like a terrible marriage/relationship. Who would want to be with someone who took no notice of the ways your love for them is expressed - breakfast in bed, listening to problems, a random hug?

On the other hand (being recently married and still quite giddy), I can see the comfort in knowing there is someone who will always love and support you no matter what you do. I suppose in this line of thought, it is the foundation for everything else you do - I think rather than ignoring it, it is nurtured by both people as a security net for expanding wings with your partner's support.

I suppose it also is the model for a mutually unselfish relationship -- both partners unquestioningly relying on the other, knowing that their complete acceptance of their partner will be met with the reciprocal response. But said in that sense it sounds very naive because people are selfish, no matter how much we may not want to be and I would think we all hold back a little, just in case the other person starts going crazy...(or sleeping with a famous, but broke, architect in your drawing room).