Unprepared
Lexus had been sleeping well for months and he had forgotten that before he was with Anna, he barely slept a wink at night without the help of his doctor's hypnosis.
That was one of the reasons his pride was hit too much when he suddenly encountered her at their bar and brought her to his private suite on the rooftop and he ended up sleeping so well after fucking her so hard.
Even if he was exhausted and spent, he usually awakens at the slightest sound or movement especially after all the training he had been through as the heir of his father. And he usually didn't sleep after fucking. He went home to his place first.
But that time, he fell asleep so soundly and he didn't hear a sound nor sense the movement as Anna changed and runaway.
He didn't know if that was carelessness on his part or relief that he encountered her again. That she was probably still living in the same place so there would be more chances of seeing her again.