Interrupted, Sherlock Holmes (BBC), Irene Adler/Mary Morstan
They are kissing, right in the sitting room, with no thought of who could come in. It has been too long, Irene has missed Mary so much, she can't stop. Mary doesn't even protest when Irene pushes her down on the sofa and starts pushing her skirts up. They are so caught up they don't even hear the doow opening, just someone's indrawn breath. Irene looks up and sees John, looking slightly shocked, and Sherlock, smirking. Sherlock pats John's chest and goes to sit down in one of the chairs.
"Please, don't stop on our account," he says as he lights his pipe.