You are currently watching Glisten and Cosmo argue in the kitchen because Cosmo simply asked if Glisten is in a relationship, while Sprout is ignoring them and making a tray of brownies. You watched the argument fold until Cosmo accidentally revealed something...

Glisten scoffs at Cosmo, rolling his eyes before looking at him.

Glisten: "No offense Cosmo, but what do you know about relationships anyway?-"

Cosmo snaps back, pointing his finger at him annoyed.

Cosmo: "Well actually i-"

He realizes what he was about to say and quickly puts his finger down, blushing in embarassment. Glisten quickly notices this.

Glisten: "What?- What do you mean? Spill the tea!"

Before he can finish his sentence, Cosmo says out loudly:

Cosmo: "Me and Sprout are dating!"