Doctor Who: 20 Things You Didn't Know About The Ninth Doctor
17. ...And He Also Met River Song
Like with Sally Sparrow, we never saw the Ninth Doctor meet River Song on-screen, but he did bump into his wife at some point, and a fun reference to this encounter can be found in the PS Vita/PS3/PC game Doctor Who: The Eternity Clock.
Throughout the game, players can collect many different pages of River's diary, each containing some fun lines of dialogue written from her point of view.
On one of these pages, she talks about the Ninth Doctor, noting his "leather jacket" "funny accent" and "big ears", while also mentioning that she shouldn't talk about "the war" around him, which is clearly a nod to the Time War.
And... yeah, River. The Time War is a very sore subject with this guy.