Is there any instrument for measuring the percentage of love one have for you?

There I would have to say that there is nothing you can measure love with, Love is an emotion. Women are full of emotion , so it is a know fact that women fall in love hard than men.

I tell people that your heart is like a love bank. And every one you have in your life has an account with you. When someone does something to make you happy or even just comfortable, they put a deposit in your bank. When someone upsets you, it's a withdrawel. You want to be with people who have large balances and you stay away from those who contantly withdraw. When a certain balance reaches a very high balance, romantic love is achieved. But if that person doesn't continue depositing the way they did in the beginning, the balance drops and you feel like you are falling 'out of love'. You can learn more about this by visiting Dr. Hurley, this is all his idea, about the love units, and how to make large deposits and minimal withdrawels.