Milly's putting his vast array of skills to use again. He's already used his gift for languages and his storytelling skills, now he's giving out relationship advice concerning his specialist subject, Felix.
I'm team Milly-Fox all the way. Even Felix is team Milly-Fox, he just has a weird way of showing it. I'm glad the brothers have had a heart to heart (of sorts) about how Felix is liable to say hurtful things because he's that kind of person. The most important thing Felix said was that it wasn't about anything being wrong with Milly.