The way that u could tell that they were meant to be. Don't get me wrong, I think that human and vampire relationships are waaaaaaay too overrated, (Thank u ever so much, Twilight.) but I like the couple. Besides, Prince Bubblegum is a total wuss. Honestly, I'm waiting for the new episode, "Bad Little Boy", to come out. God, why does Cartoon Network have to torture me door making me wait ONE meer DAY?! Anyways, Bubblegum can be classified as a "gay best friend" in my opinion. No offense to any Bubblegum fangirls of fanboys, and no offense to any homosexual people, but that's just how I view him.
The reason I started to like/love fiolee, ( Fionna and Marshall Lee ) was because its passionate. It has romance, adventures, and rivalry between Marshall Lee, Prince Gumball, and Flame Prince. There all in love of like Fionna. They want her to notice them. So, they hang out with her, like when Prince Gumball came over to the tree-house and made Fionna cream puffs of the time Marshall and Fionna went to Lumpy Space Prince's party in the woods. He was trying to get her to notice him. Anyways, the main reason i like/love fiolee is because I can connect with the story.
Well, i ship this cuz when i watched Bad Little Boy, i could pretty much tell that Marshall liked Fionna, so i started shipping em :DDD Plus, Marshall is a bad boy and Fionna is a good girl, so i figured 'Opposites attract, right? :3' Hey, i've got an equation for ya: Marshall Lee plus Fionna equals 1000 times better than Twilight O3O
What i like the most about Fiolee is that they are nothing like the stupid love of "shovel face vampire" and the "mary sue skeleton ",even when they getting marry they wont act all romantic and only care about "tier 15",they will still be chillin and adventuring.Also i like how opposing their personalities are,Marshall is a bad boy and Fionna is a good girl,so if they are in love,may be Fionna will make Marshall turn on his softer side.Also i love how cute they are together