When Miami police showed up at Courtney Clenney's condo on the afternoon of April 3, they found her holding her bleeding boyfriend in her arms. Christian Obumseli, 27, who had been stabbed in the chest, was pronounced dead at nearby Jackson Memorial Hospital. Clenney, 26, was charged with his murder last week, the alleged culmination of what investigators described in their arrest warrant affidavit as an increasingly "violent and toxic" relationship. The model—who goes by Courtney Tailor on OnlyFans and Instagram, where she's followed by 2 million people—has maintained that she acted in self-defense. But authorities allege in the...