Nic Kerdiles is still grateful for ex-fiancée Savannah Chrisley after the couple officially ended their engagement.“This woman right here has been the BIGGEST blessing in my life,” Kerdiles, 26, captioned a series of Instagram photos on Wednesday, September 16, from his time spent with the Chrisley Knows Best star, 23. “She has the purest heart out of anyone that I know.