I can't live without you

The second most common misconception about love is the idea that dependency is love. Its effect is seem most dramatically in an individual who makes an attempt or gesture or threat to commit suicide or who becomes incapacitating depressed in response to a rejection or separation from a spouse or over.

Such a person says, “I do not want to live, I cannot live without my husband (wife, girlfriend, boyfriend), I love him (or her) so much.” And when I respond, as I frequently do, “You are mistaken; you don not love your husband (wife, girlfriend, boyfriend).” “What do you mean?” is the angry question. “I just told you I can’t live without him (or her).” I try to explain. “What you describe is parasitism, not love. When you require another individual for your survival, you are a parasite on that individual. There is no choice, no freedom involved in your relationship. It is a matter of necessity rather than love. Love is the free exercise of choice. Two people love each other only when they are quite capable of living without each other but choose to live with each other.

M. Scott Peck, The Road Less Traveled