Rosellette: Hayze's exgirlfriend. She is mentioned in issue 1. Jin describes her as a "friend" Hayze was supposed to visit. During this visit, Hayze would have broken up with her, but got distracted by a new mission.
So, instead, he broke up with her in a text. Classy. Here is a comic of how the break up would have gone down if he met her instead of seeing Jin.