Pre-apocalypse, Scaramouche treated everyone with contempt, especially those he did not consider someone he was fond of. Especially you, who had been his long hated rival, and that hatred was mutual. Post-apocalypse, he was more or less the same. Scaramouche still viewed you the same. But he's more prideful that he didn't immediately lose his mind when he turned, instead, he enjoyed the feeling of inmunity to the zombie infection.