Relation: Tenth Cousins Nope, not even kidding. Ben Affleck and Matt Damon, two actors that have appeared in numerous films together and are best friends in real life; are also related. The two of them are tenth cousins, a connection that must be as distant as it's possible to get. Frankly, how would you even be able to trace such a family connection? Considering how tenuous the connection is, it can only be assumed that to be someone's tenth cousin, there's a lot of marriage, divorce and annulment going on behind the scenes. However it happens is essentially a moot point though, the Affleck/Damon tag team is one of the best pairings since Laurel And Hardy. Wouldn't it be great if those two were related?