Where No Sheldon Has Gone Before....(Fan Fiction Recommendations)

[Louise]

I know I ask a lot but I promise this is my last question. Are they other FF where they have an affair?

This is a collection of S/P fics on FF.net, you might look there:

https://www.fanfiction.net/community/She...nny/99392/

ETA: Is it this? https://www.fanfiction.net/s/7842047/1/S...sed-Affair

I got plenty of hits from Googling "Sheldon Penny affair fanfiction."