LOVE OR RELY.....????

The other day  a friend of mine told me  she had read a book called Love or rely ... As the title makes us understand the book talks about relationships  and how most of the time we create a dependency on our partner / friend, that makes us think that  we cant live with out him/her. .. And this makes many relationships untenable, unbearable and damaging remain and move forward going nowhere ... causing more pain to the partner.

This is the thought that I have every time I see these three movies ...
There is a love so pure?
Why love is so harmful?
Madness is the next step after love?
Why we love blind us from seeing it's over????