That's not what he's mad about. he doesn't like sharing, but he's willing to because it makes Bai happy. But Parker knows that there are people out to kill her, and he trusted Parker to protect her while they're out. He can't do that if he's busy banging her out in the open where anyone can come upon them while they're defenseless. He's angry because Parker placed getting his rocks off above Bai's safety.
I know..I was joking (￣∇￣")
Half joking. I still think Curtis is gonna end up eating Parker one of these days lol
He's like "I know parker is also Qingqing's husband but he isn't allowed to have babies with her too" (￣∇￣") I'm surprised Curtis hasn't tried to wait in a dark corner of a room for Parker to eat him ╮(￣▽￣)╭