Princess Bubblegum = The creators weren't expecting a "love relationship" going on in the beginning of the series. This show is called Adventure Time, so they wanted to start off with adventures and not lovey-dovey stuff. Anyways, a 13 year old hooking up with a 18 year old wasen't really age appropriate I guess.
Marceline = I think Marceline was supposed to be more of a challange for Finn and Jake, not a love intrest. Anyways, Marceline dosen't appear in alot of episodes anymore, so we cant learn much more aboout her past such in the episode "Memory of a memory", where we see Marceline with her ex, and her with her dad at the restraunt as her dad was eating her fries. Anyways, Marceline would never hook up with Finn.
Marceline = I think Marceline was supposed to be more of a challange for Finn and Jake, not a love intrest. Anyways, Marceline dosen't appear in alot of episodes anymore, so we cant learn much more aboout her past such in the episode "Memory of a memory", where we see Marceline with her ex, and her with her dad at the restraunt as her dad was eating her fries. Anyways, Marceline would never hook up with Finn.
hello diary this is me finn alot of people being fighting over who would i go with even i,can't choose, i'll think about it hmm how about fp shes hot and at my age but i cant live being always burned, PB too old for me if only there were no lemon grab she can be 13 forever,marcilline have the same like of adventures but she looks like young but i know she's 1000 years old and have no likes on me hmm who should i choose hmm.......jake:hey finn what are you doing!!Finn:NOTHING jake:is that your diary finn: NO well whats in there finn:I ALREADY SAID NOTHING jake:*stares on finn*........... works for me good night finn Finn:shooo that was a close one and dear diary jake almost see my diary good night.