Behold Facade, an independent freeware game released in 2005. You play some person who is thrust into the middle of your close friends' troubled marriage. You can walk around and attempt to talk to them.
 
This should be where I say something interesting about the game's ambitions with interactive storytelling and making the player feel involved, but I'm a lazy bastard and I need to go play some more games, because I haven't all week. So here's some dude playing it in a manner far more entertaining than I can: