Ez is more than amused at Jackie walking away. Ez isn't even mad, she's just amused.

Billie: *laughs and kisses him* well, maybe not to you.

Yeah, and it'll take a lot for Eros to not just beat the holy fuck out of Justin when he sees it too because he knows it wouldn't make things better for her. Because Justin would treat her like a cheater. 

Clary: of course she could stay! 

Ryan: *nods* we could have a girls' night in. 

Exactly. That and he doesn't want her to feel bad for something she couldn't stop

Okay. Good.