Jackie believed that Simone owed Heavenly an apology for the way she acted, but Simone disagreed. This is what caused the tension between the two friends, as Simone believed that Jackie was taking Heavenly's side over hers.

“Jackie and Simone had a huge fight. It was really bad. Simone went off on Jackie because she’s really hurt by her so-called friend [Jackie]," a source told All About the Tea. “Simone feels Jackie allowed Heavenly to come between their friendship. Simone accused Jackie of taking Heavenly’s side in their beef over Heavenly dogging Cecil [Simone’s husband] on social media. Simone feels Jackie does not have her back and is not a solid friend.”

This is what caused the two to grow apart, and the riff refuses to go away. Jackie pulled Simone aside for the reunion and requested that  Simone finally apologize, but Simone wasn't having it. It sounds like their friendship may be over for good.