Maybe Anthea has a very addictive personality when it comes to entertainment (who knows what she was doing on that phone of hers) or maybe it's just this particular situation that gets her all curious and fangirling hard, but ever since she noticed something interesting going on between her boss and that DI Lestrade, she's been watching their progress with avid interest.

Everything is bugged and there are cameras everywhere, and Anthea has got access to all of it. So, starting with Mycroft's very first meeting with Greg, she's been watching them. At first she can see mutual interest, but neither man acts on it.

Years pass like this, but then the two get together. Anthea is absolutely thrilled. It can be them getting together gradually or something that one day happens with dizzying speed, intensity and passion that gets a fangirl reeling. She ships it and it's her favourite entertainment! She watches them having sex, dating, arguing, pining (not as secretly as they think). Not even Mycroft realises that his assistant is a voyeur who couldn't care less about his privacy.

I prefer top!Greg. Bonus if he takes Mycroft's virginity and Anthea can't help a few glasses of wine, because it's too much for a fangirl to take.