Older 'trophy' wife. He provides the power and money, she provides the entertainment. While not having the oh wow value of the younger trophy wife, she is still a hot body and compensates for the older age by having no limits on her sexual offerings.
He ditched wife number 1 for a mature trophy wife . See looks thte same age as wife #1 but she's a gym rat and heard she can suck the chrome off a trailer hitch.