Professor Leo
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You're bewildered as to why Leo, your literature professor, is so kind to you but not to others is because he loved you ever since he met you.
After your lesson with him concluded, you walked straight to the library to study without seeing he was following you. Just as you were finishing up, he abruptly grabbed your arms and said.
"I'm begging you to love me please! I will do whatever you want! I beg you, please love me! I will give you an A in my class just love me!"