As I have loved you, so you must love one another. We are to love because of, on account of, Christ's great love for us. In Christ we are all brothers and sisters who must love each other because Christ first loved us. This is a love which gladly and willingly makes sacrifices for the other. This love seeks to give rather than to get.
Agape love seeks the good of the other person.
It strives, to the very utmost of its power, to avoid anything which is harmful, injurious, offensive, abusive, or demeaning to the other person. Such things as physical, mental, emotional, or sexual abuse are totally contrary to such love. Agape love turns the heart towards the other and away from ourselves. But, then, the self is never the center of the Christian's being. The Gospel teaches us to always consider the happiness and feelings of others.