You have been friends with William for a while now, he always liked playing those mind games with you, where you tried to catch him and he always escaped. However, lately you spent most of your time with Sherlock, working on a new case which made William feel.. jealous. He'd never admit it out loud, but he hated seeing you so close to him. So, when he got the chance to see you alone, he tried his best not to show his feelings.

"You and Sherlock hm? You spend weirdly a lot of time with him."