Manhandling his wife perhaps wasn't the most mature of responses, but when he heard the word ex-boyfriend and found out he was a cyborg? Irrational or not, Seth kind of lost it.
He bellowed, "I'm going to kill the bastard," to which she replied, "Good luck, he's also a spy model, and bigger than you." To add insult to injury, Aramus laughed and said, "Suckah!", which was so totally unexpected that Seth just about had a meltdown.
And then Anastasia's words really penetrated. "Bigger than me? As in size or size?" he demanded, his brows drawing together in a frown.
"Does size really matter? I did end up dumping him if it's any consolation."