The best thing to do is to conduct yourself with dignity. Walk through the halls with your back straight, your shoulders back, and your head held high. Sit this way, too.
Concentrate on friends and schoolwork right now, and just relax and have some fun. DO NOT get involved with another guy right away. When we decide to date rebound guy, it almost always turns out that he is a person who is bad for us, or he's a complete loser, or something else we don't want to have to look back on.