Spoilers: Trial of a Time Lord; reference to but no spoilers for Remembrance of the Daleks.
Warnings: explicit sex
He has a reason for being here. That much she knows. Unfortunately, she will never find out what it is, because she will never have had that thought.
One, two, three: This never happened.
Written for who_otp's Classic Who porn battle (where everyone should go frolic, by the way).