Gage has made headlines for his personal life. In 1985, he married American actress and ex-model Kelly Preston, though they divorced two years later in 1987. In the early 2000s, Gage was arrested for cultivating marijuana, and he received a 41-month prison sentence for the charges despite having a license for medical marijuana in California. Gage claimed he grew marijuana to help him deal with injuries stemming from a car accident nearly a decade earlier. He married his second wife, Shannon Perris-Knight, in 2006 after his prison time was behind him.