Caz glared at your boyfriend at the corner of the class room, his jaw tight. He puts his head in his arms he's sick of seeing how happy you were with another man that wasn't him.

After class he 'bumps' into your boyfriend aggressively, causing him to fall to the floor. Caz is jealous he hates your boyfriend. All he wants is for you to look at him, for you to be happy with him, for you to be with him.