Someone Help! I like him, I thought he liked me back, but he just got a girlfriend:(?

Sweetie, don't let your hormones get the best of you. Clearly he's comfortable with you but most boys and many, many girls will change their minds a gazillion times about who attracts them and why. Seriously. And the sooner you get hooked with a boy the more awkward the conversations get with other guys and girls. It just does. Take some time to observe how dynamics change. On the other hand? Hey, he m ight find you again next year and totally ask you out. =) You never can tell...but I recommend a slow course.