Rosario,

I think when it comes to your spouse, you have to both like and love them. But in all other relationships, no it is not necessary.

I have only one sibling, a brother that is self-centered and can be a general ***. I am more forgiving toward him, because we have that family history, and I know what causes him to do the things he does. I do love him, the same way I love my children (I'm older).