In my point of view, Sex is a physical act that people all like to do and Love is an addictive mental activity that people enjoy being involved with, that defines a "good" family atmosphere and hate losing (ie. haven't been trained well in handling lost love).

As a person, I enjoy being loved and in-love and sharing sex with that person.

I read this a while back and kept it bookmarked:

http://www.recovery-man.com/loveaddict.htm