Disclaimer: I am going to reveal a huge secret to you. I don't own Miraculous Ladybug.
AN: This is set in a universe where Alya and Marinette are a couple, Hawkmoth has been defeated and they're around 18/19 years old. Oh and Alya and Marinette know who they are under the masks, but nobody else does.
"You know, that costume is really distracting when you stretch like that," Ladybug said as Rena Rouge stretched herself out and Rena Rouge chuckled.
"Oh please Mari, it's not like you haven't seen me naked before," Rena Rouge replied with a smirk. She giggled even harder at the blush that covered Ladybug's face.
"You know we're not supposed to use our civilian names when we're in costume!" Ladybug hissed, but her voice lacked any real venom.
"Pfft, it's not like there's anyone else up here but us. You worry too much," Rena Rouge replied. "Who's going to hear us up here? There's nobody on these rooftops but us."
"Well nobody except this little stray," Chat Noir said from behind and Ladybug shrieked.
"Ooops," Rena said sheepishly. "Sorry. I don't suppose I can persuade you to just forget I said anything?"
"Nope," Chat replied with a smirk. "But don't worry, I won't say anything. My girlfriend knows my secret, so why should I criticise yours?"
"Well that could have gone worse," Rena said as she watched Chat leap off into the distance. She turned and looked at Ladybug, who was staring into the distance.
"I'm sorry. You were right, I sho-"
Without warning, Ladybug jumped up and pinned Rena Rouge to the ground with a kiss.
"You owe me big time for this," she said with a smirk. Rena Rouge smirked back.
"How about we finish patrol early and I'll get to work on it," she said and the two girls leapt into the night.