How to capture

 First :

 "you only need to say : Hi darling ,  i love you"

Then:

 " Say : you are the best in the world, Please don't leave me, you are the only thing that i need to live.

In that step you will have  the 50% of the heart : Congratulations !.

Now, Try to be kind.

And the most important thing --> You must not to lie !