[She leans forward and reaches out, resting a hand on Bubblegum's forearm.]

Yes, you goob. We're as close as ever at home. I know we're not there here, but... I wanna try. You're the best friend I've got, Bonnie. [A beat, before Marceline gives her a crooked, sheepish smile, trying to cover for her own embarrassment with some teasing.] Even if you're in a freaky timewarp.