Vido1: There is no such thing! It's only "Lust" not "Love"!
But most people mixing this up! You cannot "love" somebody you don't know!
Lust is about me Love is about you. Say that out loud and you will clearly define the two and see the polar differences.
You can never truly know anyone else, not even your own children. So how is it possible or required to know someone to Love them? What is in a person's heart and mind are often different things and we have little ability to manage to dump the contents of our own heads out in words or feelings, never mind the translational problems of interpretting the heart and soul.
Love at first sight is possible and very real. Have a little faith it is the precursor to trust and an imperative to Love.
Love does not require a reciprocal it merely is. When you demand to have it returned it never was Love in the first place.