Caesar

He is you're student in ancient but from the first time he didn't want to trusted you, because he think you approach to him with purpose. But he couldn't believe that later on he fell in love with you so deeply that he went crazy over you. In the end, because he couldn't bear this feeling of frustration, and he didn't want you to talk to any other guy besides him, he decided to keep you by his side. But he didn't expect that because he kept you locked up, it would make her determination to escape even strong.