Why do people say "I am falling in LOVE"?

I have heard people saying in reality and in movies (both Hollywood and our very own Hindi movies) that, "I am falling in love". The term "Falling in Love" is generally derived from western countries, and it usually means the process of moving from a feeling of neutrality towards someone to one of love. The term "Fall" can imply to many things such as putting the lover in a state of vulnerability or that the process is irreversible. It also means that process of love may have been uncontrollable. However, its never bad to fall in love as pointed out by Albert Einstein. It has been theoretically proved by many psychologists that people generally fall in love when they want a change in their life or even start a new life altogether.

I want to quote few lines from a Wikipedia, which says "falling in love is a rapid process of destructuration-reorganization called the nascent state. In the nascent state, the individual becomes capable of merging with another person and creating a new collectivity with a very high degree of solidarity."

I remember a wonderful song sung by Elvis Presley, "I can’t help falling in love with you". Just read through the lyrics of the wonderful song and feel the difference it makes in your lives:

Wise men say
Only fools rush in
But I can’t help falling in love with you
Shall I stay
Would it be a sin?
If I can’t help falling in love with you
Like a river flows
Surely to the sea
Darling so it goes
Some things are meant to be
Take my hand
Take my whole life too
For I can't help
Falling in love with you
Like a river flows
Surely to the sea
Darling so it goes
Some things are meant to be
Take my hand
Take my whole life too
For I can?t help
Falling in love with you
For I can?t help
Falling in love with you

But, why people really fall in love is a mystery, and still is a mystery why some love grows and why some love fails. Love is like a sum of the interests and attractions and certain common traits that two people share. And just as life is a gift that comes and goes in its own time, so too, the coming of love must be taken as an abysmal gift that cannot be questioned.

To some people, this gift of love comes at a very early age so you must take hold of it and celebrate it in all inexpressible beauty. However, if it fails altogether, just don't stick to it. Just move on as you move on with life. Because, just life is a mystery, love is also a mystery that no human being has been able to solve on its own. It’s just the God's will that you cannot even pretend to change. When love fails, you look for answers and think about "What's really wrong in yourselves that made the other person not love you?" You tend to blame the circumstances that caused this situation and say that if they go far away and start a new life, their love will grow. Imagine that you fall in love with another person, and the other person also falls in love with you. Then, suddenly everything starts looking negative to you and other person decides to leave. So, in this situation, do not try to recoup it or to assess blame. Just, let it go. There is a reason and there is a meaning to everything in life. You will know in times to come as its not you who have written your future.

Remember that its not you who chooses Love but it’s the vice-versa. You can only accept it when it comes to your life. Feel the way it fills you to overflowing, then reach out and give it away. Give it back to the person who brought it alive in you. Give it to others who deem it poor in spirit, and give it to the world around you in any way you can. Also, remember that Love has its own time, season, and reason to come and go. You cant neither stop from coming into your life and nor stop from going from your life just as you cant stop people from dying. You can only embrace it when it comes to you but when it chooses to leave you then there is nothing you can do and there is nothing you should do either. However, you should feel luck and out of the blue moon that God has chosen you to be "fallen in love" out of the millions of people standing in the line still waiting to find a love of their life. In the end, I want to quote the following lines, "If you keep your heart open then it will definitely come again in your life." I want to quote few lines of a beautiful poem Falling in Love is Wonderful from Harry Kottler,

Falling in love is wonderful.
Falling in love is sublime.
Falling in love is wonderful.
I fall in love all the time.

Falling in love is wonderful.
I fall in love with all I meet.
Falling in love is wonderful.
I greet my beloved on every street.

Falling in love is wonderful.
It's not grave; it is floating on air.
Falling in love is wonderful.
I fall in love with both the ugly and the fair.