The assassin slowly started flirting with Eren.
She started adding obvious innuendoes. She laughed cheerfully at Eren's witty remarks.
The butcher knew that his puns could be funny. But not as good as the response he was getting to them from Shalen. She flirted with him so seamlessly that even he would have believed that it was natural if he did not know any better.
Shalen started adjusting her dress and hair quite frequently as she talked more with Eren. Her cleavage was made apparent by her as she touched her exposed neck with her hands from time to time.
"Eren, I heard that you lead a… let's say… very colorful lifestyle. What say we make this travel a pleasurable experience for both of us?"
Shalen concluded the time was ripe for her to invade Eren's personal space. She needed extreme proximity to him to attempt an up-close and personal assassination.