Love as a Construct
After the events of Portal 2, GLaDOS brings Wheatley out of space to keep her company. Through trial and error and revelations, their friendship grows into an undeniable connection that they just might be able to call love. No androids or humanisations.
I don’t expect anyone to read the entire thing. Start where you want and if you have questions just ask and I’ll fill you in. Feel free to skip whatever parts you think are boring.
Claptrap comes into the story during Part 82. If you want to skip the parts he's in because you don't like him/don't care about him, go ahead. There'll still be just WheatDOS stuff.