Would You Let A Stranger Access Your Wife This Far?

 Its clear Robin Thicke & wife and Paula  are practicing an open relationship.They have been together since they were teenagers.Last night, they were at the VIP room in Paris and Paula was openly flirting with a stranger while Robin watched with amusement.
I was wondering, would you rather have an open relationship(He/she cheats openly with your approval ) or let your spouse cheat behind your back? 

Before you answer, see more pics of their wild night below

Chilling On His Thighs After Rocking The Total Stranger