Joan is really good at being sneaky, seeing as it's literally her job. But she's definitely is feeling the tension in keeping their relationship secret. She doesn't necessarily want to shout it from the rooftops, but she does want to hold his hand in public. And have his friends and his team know she's his girlfriend.

"Noted," she said about Roy. "I have a lot of experience handling guys with attitude. Sherlock keeps me in practice."