Ray Palmer aka The Atom and Felicity Smoak heat up this season on Arrow. after their professional relationship turns romantic. Brandon Routh, who plays Ray, told EW, "At first, it's just purely platonic and purely about her and her amazing brain and tech abilities. That's why he seeks her out at Tech Town. He didn't know what she looked like or one thing about her and I think he was pleasantly surprised that she's as fetching as she is. It's her rebuttal and her rebuffing his advances when he starts to get into her that fuels the whole thing and makes her even more appealing. But at first, it's absolutely that she's just a tech wiz and has a job skill set that he's looking for."
In an interview with TV Line, Emily Bett Rickards aka Felicity, said their characters will definitely become close. "...he’s going to be sort of a transparency in her life, perhaps be her polygraph, as she is for everybody else, which I find very refreshing for her," she said.
Here are pictures of the on-screen couple.