lol i dunno... i think he was pretty depressed in Brezzy, after all the nasty stuff that happenend to him in past eps... (btw i don't know how to take the fact that he briefly saw Breezy as PB at the end of that one (hoping i'm not spoiling anything to you lol)...)
LOL Finn and Bubblegum wouldn't work because Bubblegum is so.. just different to Finn xD where as Flame Princess has more in common with Finn like with adventuring. But I am with you like why?!?! Esp Now because it was like they just got together then they want to ruin it.
i saw the new episode. PB just wanted to do tests on Flame princess, and FP went willingly, until she found out it was because of PB that she was locked up most of her life. Speaking of which, i found out that my theory of PB's age is correct. cuz according to FP's flashback, it was 15 years ago when PB told her father to keep her locked away, and she looked just the same as she does now! this adds alot of my theory about her past together. and i was super sad the creators did that. but no need to hate. at least Flame Princess became flame queen after overthrowing her father. oops! sorry spoilers! anywho, she's alot happier now she knows where she belongs.