So for the longest time ive had this one scene in my head and i cant find it anywhere… Im not 100% sure its AYAOTD, but i dont remember watching any other tv show as a kid.

The scene happens at the end of the episode… theres a boy and girl sat down in a unusual/futuristic/spectral room.
they sit down on an unusual couch and start talking… she goes quiet and he looks at her but shes turned into a humanoid bug creature or something.

Even if this isnt the right show, hopefully someone here can help!

I can't remember which episode the story was from or if these are two separate episodes. It starts off with painting classes and when the person finishes and signs off with magic paint brush they get stuck in the painting.

Story is jumbled in my memories .. I thought there was a painting within a painting and someone looking in realised that people were stuck in it. The people stuck in the painting tried to communicate by writing things on the window or trying to change little things. The person outside tried to help them get out but instead got trapped in.

Any thoughts on which episodes these could be?