When Gordon Simmons grew the Service Credit Union from $292 million to nearly $2.8 billion over his 20-year tenure, he was considered one of the industry's most successful CEOs.

But starting in 2015, Simmons rapidly fell from grace after starting an affair with his administrative assistant, taking her on a business trip, forgiving her $38,000 loan, firing an employee who exposed the affair and lying about all of it to the board of directors.

These details surfaced in a counter lawsuit SCU filed against Simmons over whether the credit union breached two agreements to pay lifetime medical benefits for him and his wife. The lawsuit is on a temporary hold until a federal judge makes a ruling on motions filed by SCU's and Simmons' lawyers last month over whether the legal dispute should be heard in federal or state court.