So here it is. The final chapter.
Phil and Marceline started out as friends, until Phil finally got up the courage to ask her out. They have an awkward, but cute relationship, and make each other so happy.
Dan and Sam kept making videos together or separately, and eventually bought a studio apartment where Sam could continue work as an artist, which they decorated like the hotel room, with lots of little lamps and candles, to remember the night they made their promises to be together forever.
As for me, I'm waiting.
She needs me, Sam, and one day I'll go back to her.
I'll get my Sammy back.