Love or Commitment

All of us have different experiences and different opinions on relationships. I have relations that require commitment and love, but at some instances in my life I was exposed to a situation where there was no love but commitment was present. It was me and my maternal grandfather; we lost love in our relationship about three years ago. But a commitment is there that I have to take care of him because my mom asked me to. He is an angry person, with a lot of pride and it is annoying to me all the time. He always accused me of an unsuccessful person and it always got me angry. We had fights and lost love in our relationship. On the other hand, my sister and I have a love relationship but there is no commitment. We do whatever we wish to do and none of us stop each other. Both relationships have different impact in life; love is required for all relationships to go smoothly whereas commitment is merely an option. Personally I would conclude that as long as the love prevails in a relationship it is strong, as love fades the value of relationship always fades away.