This is sort of interesting. There's very little sugar-coating of how dysfunctional their relationship is (I honestly expected them to pull out some standard "actually this was just our miscommunication" tropes but no, the relationship is fundamentally a dumpster fire right from the beginning). And then there's some progress, but it doesn't end with them being in some perfect idealized relationship, just a functioning one that one might optimistically say is slowly improving. All in all, there's a lot more realism in here than usual.
The flip-side is the comparative lack of rose-colored glasses does make this feel a bit more genuine than some of its similarly-inclined peers, even though it's an idol plot and all that.