What does it mean when some one say

' I love you'

when some one say I love you to another person then what he/she feel.

why he/she say i Love you what he/she love about him/her.

Is it the look,attitude,behaviour,personality or what?

Mother love son because he/she is her son.

Boy love girl for various reason may be physically or may be emotionally , cow love grass, Cat love rat.

so is it love means wants?