I don't care much myself(not NTR fan at all). I give stories a shot to do what they want and react to how they execute it, over inserting my own preferences.
But I do think at minimum it would've been better to wait a bit before revealing that the cheating was a lie to the audience.
Having mc have to liveand work with someone who hurt him deeply that 3 years later he still is conflicted over it, with a character who appears guiltless having cheated on him (interested in only herself), would've been more interesting. Kinda like Love Agency, where surface impressions of characters flipped after some development.
Let us grow to hate her for cheating shamelessly, to then learn she had to lie for some reason, and genuinely seeks to make amends as soon as she reconnected with him. And even despite her own feelings, become his wingwoman in pursuing her roommate.
I won't say I dislike the series(body swap/transformation series are usually fun ways to add drama, comedy, etc)(yet, it's only 2 chapters), but it's starting premise/emphasis is certainly a bit weak. But all that means is the author just needs to put more work to make the series engaging. Maybe it will soar, maybe it will nosedive.