"You're overthinking it mate," Marco tugged the fishman close with one arm in a hug. "The spark would have happened sooner or later seeing as Grell is so feisty, and Codi doesn't know what she's messing with."

It probably didn't help that Marco thought it was hilarious and epic, and all kinds of awesome. And damn if he wasn't head over heels for Robin, he'd have been that much more smitten for Grell. What? Chainsawing people over a temperamental overprotective fit is hot. He's just saying thinking.