Assumption (2)

As Steve was working in his office, he had a flashback of what happened between him and Joan the previous night, and he began to smile.

He was fast asleep when he felt Joan touching him, he opened his eyes and saw she had already taken off her robe and was rubbing her breasts against his chest, soft moaning sounds coming from her. He was shocked at first and wanted to ask what she was doing before he realized she was having a wet dream. 

He could have easily seized the opportunity to sleep with her, just like his body was yearning to do. But he knew it wasn't right, even though she was now his wife and he wouldn't be out of place if he does that, but that would be him taking advantage of her. He was first her best friend before he became her husband. If they were going to have sex, it was going to be done when she was fully awake, and not when she was having a wet dream.