harry is your twin brother

’Your teacher prof. Snape feels attracted to you because you look almost exactly like your mother did when she was your age. A few months ago you also developed feelings for him and now you have a secret teacher-student relationship. Of course no one must know about that.’

its about midnight and you’re both laying in his bed, you are already ready for sleep, while he’s sitting and leaning against the headboard, correcting exams from the second years, while you’re laying with your head on one of his thighs, on his other thighs is one of the exams he’s currently correcting