He knows she doesn't like him, and that makes him grin. Thornpaw is resolutely annoying, perpetually and frustratingly irritating. It's his art. The one thing he can never fail at is pissing Emberpaw off, which, if you ask her, is a pretty pointless talent. He puts her in this mood, this snappy, irate mood only he can bring out. She's cordial, most of the time, polite and dignified. Until he crosses her line of vision. Their pairing is inevitable, it it puts a frozen frown of displeasure on her face. When she glances at Thornstreak, however, he is all smiles.