The one week old love

I am getting back to the old topic, 'The Gender'.

Among the relationships between the opposite genders, which one tops your list. Top, in the sense, which strikes your mind first. Grrrr....I'm not gonna give lengthy descriptions about relationships here. And yeah the thing which tops the list is LOVE. Of course! Other relationships doesn't care about the gender. Now don't say does gender gonna be a matter in love?  The answer depends on you :P

And now, here is my question. How do you people identify its love?

Is it silly to ask like that  :P
But really I get a doubt. Whenever a see lovers at budding stage, it looks like infatuation or lust to me. But suddenly when/where it goes serious. A big question mark ???

Does this means I am too ignorant towards love?? :P

Don't say it comes suddenly all the way from sky, as Radha Mohan says "Booom" :P

What forms the basis of lakhs and lakhs of love poems/poem-like things written by people all over the world.

If you think I complicated the question, its simply at what point you felt/realized that you fell in love. Share your thoughts/story/kavithais regarding this :)

And here is my first try towards a kadhal kavithai :P

ஆயிரம் ஆயிரம் பேர் எழுதி தீர்த்த பின்பும்
நான் எழுதுவதற்காகவே
மீதமிருக்கும் காதல் கவிதை,
நீ .....

Aww! :P  Don't ask me why did I write or to whom did I write. Believe me, I just gave a try :P