One Twin lies to another!
 

I wasn't bothered enough to work out which was which but one twin was in the treehouse, the other in the kitchen/lounge. Sam is on a sofa, blending in with the wallpaper. Dexter and Gina are telling Charlie about things they saw from the SH and why they then told people things, for their own good, when they came out. (Gina was interested to know why Charlie ignored this advice.)

Gina mentioned how disgusted she was by how they'd form into groups to talk about Callum and how what she saw looked like them picking on him. Dexter confirms this. Charlie looks typically vacant, possibly unaware anyone is around her.

Gina says, quite clearly, "I liked Callum."

Downstairs Twin goes to visit Upstairs Twin, to show he can't pronounce clique, and one of the first things out of his mouth is, "they're slagging off Callum."

Bad boy, or total moron, you decide.

There aren't many who can pronounce OR spell it, it usually comes out as click!

It still made me laugh when he was being all solemn and resentful. "I'm not here for clicks!"

Crap cover version of an Amazulu song.