An alleged “sugar baby” was hit with a $7.6 million default judgment for engaging in an extensive campaign to ruin an ex-boyfriend’s life.In a written order this week, U.S. District Judge Charles P. Kocoras directed Jessica Jiahui Lee to pay $2.6 million in compensatory damages and $5 million in punitive damages to the former boyfriend.The boyfriend — who filed his lawsuit against Lee as a John Doe …