You likely know Tom Selleck as Thomas Magnum from the ’80s TV smash Magnum, P.I.. If you’re younger, however, you may recognize him instead as Dr. Richard Burke from Friends. Whichever role you’re most familiar with, though, the actor and producer is one of those in the public eye who keeps a very tight lid on his personal life. The 72-year-old has no social media presence, for instance, so you’re unlikely to ever see him post casual selfies online. But when he does shed some light on private things – his marriage, for instance – it is rather illuminating.