When you have a crush on someone similar to what middle-schoolers go though when they like someone. You start texting, hugging awkwardly, getting butterflies and stumble with your words every time you talk to set "crush." IM-ing is also key to Middle School Crushes (and don't forget to send lots of smiley-faces in them :) )

Absolutely no maturing in your flirting and feelings in this type of crush.

When you eat dirt for the first time and leave your family to build a shack in the woods