There were certain buttons that when pushed, easily sent Antonin over the edge. He'd always had a problem with his jealousy. Sometimes it was irrational. Often, however, it was entirely justified. Like when it came to Augustus. She knew from the moment she returned back to her teacher's home after staying behind in France alone with Augustus that the former Unspeakable would be a hot button issue between them. Even when they weren't involved as anything more than teacher and student, he'd been jealous of his friend's relationship with Hermione. When she knew how much it affected him, she even thought it fun to make it worse. In that particular moment, however, she just wanted the row to be over with. It was already climbing to dangerous levels.