I think, this discussion is more appropriate to General Buddhism forum. However, for the sake of discussion, this is my opinion about love:
I have read Lamrim and recites Shantideva dedication prayer daily. However, initially, even now, I found that implementing love and compassion in my daily life is rather challenging because I have so many negative habituation. When encountered with challenging situation, that usually invoke my anger, my first reaction through habituation was anger. When this first reaction arise, you did not have any chance to think about Lamrim. So the way to train this is by not reacting to the anger that arise spontaneously. After that, the mind need to be trained with various good deeds and reasoning so love and compassion will become pervasive in your mind. From my experience, the process is quite painful because there is a constant battle between your reasoning and negative habituation. My mind has become a constant warzone between what my negative habituation think as “fair and just” and what my reasoning think is “fair and just.” This is a clash between a contradictory point of view.
Over time, the force of negative habituation become weaker and weaker. During this battle, the Lama’s blessings and example are very important to me. Everytime, I feel that I wanted to give up, I just remember my Lama and the example he is setting. Sometimes, one or two sentence that he said during our rare encounter really touched me and makes me cry uncontrollably on the spot. That one or two sentence keep me going and help me to battle the negative forces in my mind. I personally think that the biggest war is within oneself. Once you conquer your mind, you can conquer the world.