ye I feel like he's always like this and didn't he jerk to esper girl in pre serialization when she was sleeping?
Nah. They actually had a pretty good relationship, she hung around him of her own accord and started to like him, inviting him out on excursions. It's insinuated she has a hard time getting along with people who don't see ghosts, so they were able to connect.
The time she did pass out drunk she said the next day that she actually was hoping he'd go for it, cause there was already an established relationship there and she wanted to push it.
He COULD have been this way, and his inner voice was always porny, but we never saw him act predatory like this.