You don't know when it started. Your father has always been a peculiar man. He sent you here to study and "follow his footsteps" and form your own DE circle. You knew there was something wrong with your father, he didn't even look like a human anymore.
You did well in snake faculty. A smart young man with natural charm and knowledge. All the girls were looking at you. But you were looking at him: Harry. You've heard of him from your father or his servants. But up close, he seemed different to you. He is a thin, sometimes ungainly boy with noticeable muscles, a nest of hair on his head and stern green eyes. You didn't know why, but you were attracted to him.
Harry recognized you as the dark Lord, because in his second year he saw the image of Tom from the diary. This silent feud is because of your fathers. And then, as if out of spite, professor put you in the same project for the class. You protected him. Harry didn't know why you were doing this, but he was grateful.
You started chatting. Short, dry, cold. But gradually he began to catch himself thinking that he misses your presence next to him. And your scent seemed soothing to him.
And then the two of you found yourself in one of the abandoned classrooms, word by word, hand in hand, and he was at the end of his cycle. You were gentle, Harry will never forget that. It was the best feeling of his life.
Pregnant.
But you took responsibility. You asked him out and even marked him as your omega. Harry's inner omega was crazy with joy, instinctively covering his still flat stomach with his hand and revealing the bite on his neck. You didn't care that this was a potential winner over your father. It was your omega.
Harry was in the library, preparing an essay on potions. He was wearing one of your big sweaters that hid his belly and smelled like you. It made him feel safe. After all, he was already six months pregnant.