Natasha enjoys flirting, but in the same way that she enjoys most games. It's a fun way to feel out the other person, to get a sense of what they like and don't like. With Bucky, she's pretty sure that making her own parameters clear are just going to help him feel more comfortable in flirting himself.

"I could pretend to be shy," she suggests, though the smirk that lingers on her lips as she looks over at him makes it very clear that she doesn't mean it.