Jack: Last time I met you, you owed me a drink.
River: But I have paid that. It was a lovely evening. You’ll enjoy it.
Jack: Nice try. But when it comes to time traveler tricks, I’ve used them all.
River: I’m sure you invented quite a lot of them, too.
Jack: Can I buy you a drink, then?
River: I suppose just a drink wouldn’t hurt.
Jack: That’s not what I remember from most of times we met. Is there another man? Woman? Just don’t tell me it’s another Nestene Duplicate, I’m not doing that again.
River: There’s a man.
Jack: Great. You should invite him.
River: I’m sure you’d enjoy that.
In which River Song and Captain Jack Harkness meet again in the 51st century.