Quote Originally Posted by otakuryoga View Post
yes..because they were poisoned
Quote Originally Posted by Strife Warzeal View Post
(I just wanted an excuse to use that gif)

At the end of the episode while the CMC are doing Big Macs chores, Big Mac and Cheerilee are having a picnic, while it's to fool the CMC it could easily be the base for a real relationship. I've seen ships with less to stand on, at least this one makes a bit of sense
Well Strife beat me to it, but basically this. After that whole mess they spend the day together, mostly as a joke but end up genuinely enjoying each other's company so they start dating.