Sumner Redstone, the 92-year-old head of Viacom, has split with his longtime live-in girlfriend, Sydney Holland, 43.

The split came after Redstone accused Holland of cheating on him, according to a story in The Hollywood Reporter, which first reported on the split.

“Sydney Holland and Sumner Redstone have had a caring and wonderful relationship for over five years,” Holland’s lawyer, Brad D. Rose, said in a statement. “While Sydney would have liked the relationship to have lasted for many more years to come, relationships are dynamic and ever-changing, and for a whole host of circumstances, the couple has parted ways.”