Nonverbal signs he likes you?

well i am 14 and i have ALOT of experience with guys but most of them were to shy to tell me they liked me in person but you can just tell. for expample, if the hottie sees you slowly disappear from the corwd and if he looks bad and starts looking for you he like you! or if always wants to see or know what your doing he probably likes you! GOOD LUCK WITH THE HOTTIE HUNTING!!!