How does it feel to be in LOVE??

I have been wondering this question for a long time now.... Hope you all can answer...

1) What will you always do when you are in love?
2) What will the guy usually do when he wanna say 'I love you'?
3) What will the person you like do for you?
4) What is the feeling when you are having happy times with your gf/bf?
5) What will you feel when ur beloved one wants to kiss/hug you?

All my questions are written down, but the most important one is:

What is the true feeling when you are REALLY in love??

Hope someone could answer all these questions of mine 'bout love... :)