We all know what it feels like to have that one person at school -- who may or may not even know your name -- that gives you butterflies when you walk past them in the hallway. So when #15ThingsAboutMyCrush started trending worldwide on Twitter, teens leapt at the opportunity to tell the world how fantastic their high school sweetheart is or how much they wish their crush knew they existed -- and also professing their love for things not quite human (pizza, anyone?) Click through the slideshow below to see what the Twitterverse thinks about their crushes -- and get ready for some totally "aww"-worthy moments.
Which tweet is your favorite? Have you ever tweeted about your crush? Don't be shy -- tell us in the comments below or tweet @HuffPostTeen!