Steve originally thought that when Ruby returned to the bedroom, she would put on her clothes or shyly hide under the covers. However, to his surprise, she was standing next to the clothes rack, almost fully-naked.
Just now in the office, Steve had been impulsive and couldn't restrain himself, nearly crossing the line before being interrupted by Maya. After Maya disrupted them, his impulsiveness subsided. But now, seeing Ruby with her fair neck covered in his love bites and holding a sweater just barely covering her chest, her legs tightly closed together as she stood before him, her entire body blushing due to his stare, the once-dissipated impulse suddenly surged like a flood, sweeping him away once more. Steve reached out to pull Ruby into his embrace, fiercely kissing her as he pushed her towards the nearby bed.
Perhaps because Maya had interrupted them midway, Steve was especially enthusiastic, entwining with Ruby for a long time before finally stopping.