Who wants to know about Marceline and PB's past together??

I doubt that Princess Bubblegum dicho "Hey Marceline" in a bored tone purpose. She dicho it because she didn't really like Marceline. Somewhere in-between that episode and "What was Missing", Marceline most likely gave PB that black camisa, camiseta seeming that they didn't really like eachother before that. In the episode "What was Missing", Marceline was was probaly sick out PB and told her through a song. But like her song, Daddy Why Did tu Eat My Fries, from the episode "It Came from the Night-o-sphere" she seemed to have been embassesed when she notice that PB and her dad heard the song for them especially. Now we see they're friends, but 1/2 of the fans think that there might be más to that then "just being friends".

i really hope they mostrar they're past so we can finally put together what happened. i think its very important to know because it explains they're attitude towards each other and maybe marceline is very distant because of what happened.

I don't know but maybe they did have a relationship with each other(like what tu dicho fangirl51397). Remember the 'Princess Cookie' episode? When Peebles went to that some kind of orphanage o something? Anyway, when PB went there, Cookie was just a little child. However, Bubblegum's appearance is the same. Chances are, Preebos maybe immortal like Marmar o maybe aging slowly.I also read a fact that PB ain't aging like humans. Meaning, she is in the right age to have a relationship. Also, Finn doesn't know anything about Marceline when they first met her,right? Although AT didn't mention how Princess Bubblegum and Finn met but he probably met her when he was young. But since PB ages slow,she appeared to be 18 even though she's older than that. Tendency is Marceline and Bubblegum must had a relationship with each other BEFORE Finn and Jake even met them.

this is just my opinion. im not sure if its true but about that Princess Cookie episode is true,though.