Mike (Desi's player) has made it clear in out-of-character conversation that Desi has a crush on Kevin. But she recognizes that Kevin has a crush on JD, so she's respectfully kept her feelings to herself.
If you were sitting at the table during one of our games, you can tell Desi's feelings by the way Mike has her voice bubble when she speaks to Kevin. Bear that in mind as you read on.
Kevin, of course, is completely unaware that Desi is attracted to him.