Constantine is reading the writing on the floor. Normally people read the writing on the wall, but Constantine has to work with what he's got, and he gets writing on the floor a lot more often than not.
Thea has been tossed to the floor, blanket and all. It's not a surprise, as Sara was able to break free from the wall in chains, taking with her a good chunk of brick and mortar. The woman is stronger than she ever was before!
Oliver and Laurel are getting their grievances out in the open. Laurel looks like a little girl, but she's a big girl now and should be able to take it like a woman. She knew it was wrong, or she wouldn't have kept the secret from Oliver.
This is it. It's official. Oliver Queen for Mayor. It looks kind of weird, right? He becomes the mayor of Star City in the comics, so it wouldn't be a suprise at all if he followed suit in the Arrowverse.