Dude really thought his wife would not recognize his dick.
You'd be amazed how many women could not pick their husband's dick out of a line-up; they are that passive in bed (not a bad thing in and of itself, most guys are happy with the active role).
ok but was the husband the one to initiate the cheating thing or the wife? i feel like that's an important thing to figure out to know which one of them is more fucked up
I can imagine a completely vanilla start to this. Let's say the husband ended up doing cosplay with/for friends and decided to go home and surprise Vy with his "new look." Then he sees Vy in a convenience store and mischievously decides to hit on her without warning. She knows it's him almost immediately, but she (and he) finds the cheating vibe too sexy to turn down, and of course they're not really cheating on each other, so they end up in a love hotel.
Of course, now they're in a catch-22. He doesn't know she knows it's really him. Also, Vy may have no idea why he started it: was he merely teasing her, or was he really trying to test her?
I would love to see a continuation of this, maintaining both the strong vanilla vibe with the cheating vibe could be really hot, with lots of twists and turns.