Nexus had never thought it would make her drunk, and he applauded her for her acting skills, but he was eventually also deceived by her acting when she acted drunk.
Nexus couldn't suspect that Monica was pretending to be drunk. "Maybe she isn't really good at holding her alcohol," he had thought.
He had believed that she was drunk; that's why he had taken the initiative to remove her clothes so that their little acting wouldn't be discovered when Selina arrived with her witnesses, or that's what he had thought, but Monica had a different plan: "Was she pretending to be drunk?" He asked himself, but refuted it. "There is no reason why she would pretend to be drunk," he said.
"Should I ask her?" he thought, but he couldn't ask her.
Alcohol had always influenced people, and it had always been a source of bold decisions; it had clouded Nexus's clear judgments. He was enjoying the moment with Monica and wouldn't want anything to get in his way with her.