Gavin Rossdale 'suspicious' Gwen Stefani had cheated on him

Gavin Rossdale is reportedly "suspicious" Gwen Stefani was cheating on him.

The 'What You Waiting For' hitmaker and the Bush frontman announced they were divorcing in August and with the 46-year-old beauty recently confirming her romance with fellow 'The Voice USA' coach Blake Shelton, Gavin is said to be thinking the worst.