Harley has become more tame and more social, in most cases mature. Either to having a boyfriend, or a relationship that helps her come back to the reality she lives in. Outside of the life she lives, being an apprentice to a MoonRiser, and being apart of adventures either covered by media, or covered up for horrific purposes. While her boyfriend being supportive, does want to be apart of her world. He just needs to get stronger. Or get a strong weapon. Most modern dragons are a shadow of there former heritages, weak, and rarely use there element. Harley trained hard enough to break the modern limit as would any Dark Dragons would, yet Agni wants to break his limits and have more of a meaning to this relationship.

So far the two want to work on a relationship, they're young but seem mature. If anything i think Harley is teasing her good boy, make her man thirsty for fun. Maybe thatll push him to work hard.