If you don't know what it means/is, here it is:
A foolish, unreasoning, or extravagant passion or attraction.
If you want something not so dictionarish, it basically means a crush. But infatuation goes to a "addictive" path, such as...stalking.
But that's the extremes.
Anyway, this happens to me 24/7, believe it or not. I find most girls beautiful, but I really like smart/mentally intellectual girls. So yeah, I kinda get a small crush, which usually fades away or stays a couple of days. But it takes my mind of classes, s I can say it does help XD
So what about you?