Krista Dwyer is the on again-off again girlfriend of NASCAR driver Tony Stewart. The couple`s engagement was announced on May 13, 1999, but the pair split a couple of years later. They were again an item as recently as the fall of 2004 but are not currently a couple. Krista Dwyer Two-time Nextel Cup Champion Tony Stewart was engaged for a short time to Krista Dwer in 1999. The two had an on-again, off-again relationship for many years.Krista lives in North Carolina and had custody of Mojo, the famous monkey (who apparently now resides in a zoo) that she and Stewart acquired while they were a together.