
In the novel, he actually didn't care much about the oil thing. It's just one of those things that was used as a plot device to get him to come out and make FL look smart and then got glossed over. Bluepool is actually kind of cold and I don't think his emotions are quite the same as the mammals'. Probably the fish aspect. He's hyper fixated on Bai right now.
One thing that wasn't really shown here is that Jasmine has been relentless in her fixation on Bluepool. She keeps hounding him at the pool trying to get him to come out and constantly hanging around, almost stalkerish ever since he got there. So when Bai forced him out, and was trying to force them together, he just decided her would kill Jasmine and get rid of the problem. It was entirely based on the whole Jasmine/Bluepool thing and trying to make him do something he didn't want to.

I know he was mainly mad about BQQ trying to hook him up with another girl. I'm just saying anyone will be upset about their home being messed up. However since he's still trying to seal the deal with BQQ, he's tolerating it. Plus he already released his anger on the other girl and BQQ is cleaning it up.
I'm sorry but no one can tell to me that someone would not be upset or annoyed by their house being messed up. Even wild animals would be upset if you messed environment. ╮( ̄▽ ̄)╭
Did she seriously pour gallons of oil into a lake to get a sea creature and a girl to hook up. I'm not even a huge go green hippie yet that is one of the worst things you can do. Of course Blue pool is pissed! You're trashing his home. Why did she think that was a good idea?