Scara—your roommate is affected because you gave him the potion in his food. And you guys switched bodies. You in his body, and Scara in your body. Scara was angry and kept blaming you at first, but slowly he was able to accept it. But, everything went sideways now. The potion makes one of you unable to control the hormones that suddenly appear. Students at school and teachers are suspicious of your attitude which suddenly doesn't look like you. That's because your bodies are switched, sure.