In short, during her long and storied military career, Dune became a regular globe trotter. Being a live fast, die hard kind of woman, she’s collected a respectable list of past lovers, one night stands, sweethearts, and (mutual or not) broken hearts.
Maybe your character is one of these old flames!
Dune’s not picky, both men and women get her engine running. She’s not interested in settling down or being monogamous but she’s not immune to catching feelings. A lot of her longer-term relationships ended primarily due to the struggles of staying long distance. She’s not a cheater, but she has been the other woman a few times. Knowingly and unknowingly, although if she knows it’s more about being impulsive and horny rather than not caring.
In any case, if you’re interested, hit me up here or in Discord! Maybe their eyes will meet across the room and memories of that long summer weekend in Italy will return.