Because the Night, by romanticalgirl – Criminal Minds (US TV) [Archive of Our Own]

“Why am I doing this again?”

Penelope rolls her eyes. “I’ve told you. It’s a couple party. A party for couples.”

“Yeah. I got that. Why am I going? Because last time I checked, we’re not a couple.”

“I know that, and you know that, but Savannah and Derek don’t need to know that. Because if they knew that, then they would actually go through with their threats to set me up.”

Source: Because the Night, by romanticalgirl – Criminal Minds (US TV) [Archive of Our Own]

Normally I’d say I’m a die-hard Penelope/Morgan shipper, but this fic just works. Fake dating turning real is one of the best tropes! 🙂