My darlings. Today I can leave you only with an apology and a promise -- I am driving to Texas at this very moment, and as such cannot devote the time I would like to crafting the perfect ode to Adventure Time's Princess Bubblegum/Marceline pairing, which is rapidly approaching canon. The gifs I will have for you, my precious pets. The Tumblr-sourced fan art. I swear you shall have it. But not yet. There is…