Yes, Courteney Cox did date a cast member from Cougar Town.
Courteney Cox's Relationship with Brian Van Holt
Courteney Cox had a romantic relationship with her Cougar Town costar, Brian Van Holt. This relationship emerged following her split from actor David Arquette.
Their courtship was relatively brief, lasting for less than a year. The couple ultimately decided to part ways, concluding their relationship in October 2013. This connection on the set of the popular television series is a notable detail in Courteney Cox's widely documented dating history.