July 2002, to be precise.
justhuman helped me dig for it; much thanks.
Some Ethan1/Master2 slash from days of yore:
wolfling: There's also, not sure if this is a direct parallel but, Giles has Ethan and the Doctor has the Master? And am now whapping at the bunny that suggests an ethan/master as bad guys would be a good idea. (rolls eyes at self)
mpoetess: It would have to be comedic.
Ethan: Well, you buggered that up good and proper, didn't you.
Master: I have no idea what you're talking about. It was a brilliant plan.
Ethan: Oh, slipping the aphrodisiac into the wine for the feast was a great idea. Staying for the feast? Less so.
Master: I had to remain in the vicinity, to make certain there were no unforeseen difficulties.
Ethan: Bollocks! You stayed around to gloat, and see if he'd get blasted enough not to realize it was you when you offered him a shag.
Master: I certainly didn't!
Ethan: Right, so that was some other Time Lord disguised as a strolling troubador, making cow eyes at the Doctor while he sat at the King's right side and didn't drink the wine.
Master: Cow eyes? Rubbish.
Ethan: Look, there's nothing wrong with sticking round to gloat -- just admit you're sticking round to gloat. That way when they catch you, you'll look less like an idiot. I speak to you from sad experience.
Master: I'm not speaking to you.
Ethan: Oh, you are too. Come on, I've got this great idea about bespelling the internet so that everywhere Rupert looks, he sees naked photos of me. You know you want to play.
Master: [Snort.] Hardly. Why should I assist you with your petty schemes to annoy your ex-whatever-he-might-have-been? What's in it for me?
Ethan: Oh, fine, I'll let you use the spell to play with the international guided missile systems.
Master: That, my dubious acquaintance, is more like it.
Ethan: Right. Give us a kiss, then.