Ariana's "Honeymoon" tour wouldn't be complete without an appearance from her significant other, Big Sean, who's now coming down off an all-time career high as Dark Sky Paradise hit number one on the charts last week. Last night, Ariana's tour hit Detroit, so it was only right Sean came out to show his hometown some love. And that's just what he did.

The two first performed "Best Mistake", off Ariana's last album My Everything. Immediately after they finished the song, Sean walked over to Ariana, and the two shared a kiss (and a little booty grab from Sean) as screams erupted from the audience. Sean and Ariana's relationship is nothing new, but we've never seen a smooch quite like this. Watch the fan-shot clips of both "Best Mistake" and the kiss that ensued below.