cupid sends you a note.
When the world stops revolving around you
When your literally thinking bout that person 24/7 and everything u do always reminds u of that person .
I've never been in love, so I'm not really qualified to answer this question. I'd say it's something like if there was a button and once out of every 100 times you would get a cookie, but the other 99 times you get pooped on a bird.. but you eat the cookie, and it's the most amazing cookie you've ever had.. and you know, that you would be willing to get pooped on 99 times just for another cookie.
When you stay awake because reality is finally better than your dreams.