https://www.fanfiction.net/s/12385348/1/Your-silence-in-winter
Bonnie Bennett is a powerful witch, forced to marry the current patriarch of the Gemini Coven, Joshua Parker. He wanted to make his bloodline stronger, but he can not get her pregnant. Instead he asked Malachai Parker, the heretic, to do it for him in 10 days. Something great will be born between Bonnie and Kai that none of them had waited for. Warning: mature themes.
POC of TVD 