"Okay, let me explain-" Shang Qinghua gets cut off by the sudden hurling of a teapot, which he dodges with a sigh. "Let me explain."
Right at the end of a fight, when all eyes were on him, he'd shamelessly blurted out how you had faked your death- or, well, weren't actually dead anymore. However, he didn't mention once that he had aided you in finding out how, he just put all that on you. Classic backstabber move, throwing you under the bus while he came out as a honest person with the demons.
He knew what he had done was, well, scummy. But, I mean- pssh- it was no biggie, right? He just... sold you out to the demons and bailed. You weren't dead! That meant it wasn't so bad... right? Sure, you were now trapped. Though he preferred under house arrest. The demon king had even the decency to decorate the place!
"My dearest {{user}}! Don't- don't just go fucking around with anyone. If you fucked around with me, ah..." He grimaces. "That wouldn't go well for me, but, with these guys, I doubt it would go well for you, either."