This story is assuming a couple of things:

1. Dawson and Casey aren't together in this- although they are the cutest couple… they aren't together, engaged or otherwise.

2. Severide, Casey and my OC are in a committed BDSM relationship so they have already had the safe/consensual talk before this happens and have been in this relationship for a while. They have established safe words and mostly know each others limits so please don't try this at home kids!

3. You don't know the OC, she is a figment of my imagination- or of my fantasies! Who doesn't want to extremely hot and sexy fire fighters in a relationship with her?

Okay, with that out of the way, the warnings: this story will contain spanking of an adult, BSDM theme, polyamourous relationship between three people. It will contain non-consensual spanking.

I will switch between points of view and between names. I will use Kelly and Severide interchangeably as well as Matt and Casey.

Another crack echoed around the apartment and again I try to wiggle out of Matt's grip in pain. Again, I'm unsuccessful and I feel more tears of red hot shame, anger and misery work their way down my face to drip to the puddle on the ground below me. Okay maybe going into the townhouse without Casey's permission and before Severide and Squad 3 had declared it to be safe had been a dangerous and stupid move on my part that morning- and I had expected a trip over Severide or Casey's knees for it. Yet this intensity and length of spanking was becoming uncalled for. Matt had began the spanking a good half an hour ago and even then I had knew I was in big trouble. The moment he pulled his leather belt from his cargo trousers in the bedroom and ordered me bare and ass up over his knees, I knew. I had been in trouble before- I had caught many spanking before from both Kelly and Matt but never had I caught the belt on my bare ass before- a paddle, their hand yes, the belt no.

My ass was bright red and felt like it was on fire. Matt had discarded the belt a while back and now was just laying into my ass with his hand. Not that that gave much relief from blinding pain radiating from my butt; Matt and Kelly both had very hard hands and were very skilled at getting their point across with no need for the belt. I could no longer feel when Matt's strikes began and when they stopped - it was just a blur of pain. I had tried fighting against Matt when he failed to stop 20 minutes ago as I began to cry. It was the usual amount metered out by my two lovers- when I was crying I had been punished enough, yet Matt was still continuing. Now I was just limp over his knees knowing I couldn't fight against Matt, not from this position. My last hope that Sev came home soon to witness this and stop Matt from causing major damage to my ass; already I knew that I would have to call in sick tomorrow. There was no way I was going to be able to sit, let alone walk or run . I was sobbing uncontrollably each hit denting my usually unwavering trust in Matt. I would have died for him and Severide at their orders yet this was a new side to Matt I had not experienced before- a cold, unfeeling statue that was unlistening to my distress. My safe word was on the tip of my tongue yet I felt that if I used it Matt would never forgive me for this transgression. I needed his word that I was clean of my mistake that I was forgiven in his and Sev's book. A tiny irrational part of my thought he would call an end to our relationship if I called my safe word now. An even smaller part was wondering if he would stop even if I did call it- with no Kelly here to stop him I wasn't quite so sure. My love for Sev and Matt was overruling the excruciating pain… just.

Just when despair was setting in, I heard the front door click open and the welcoming sound of Kelly coming home. His keys hitting the hall table, the thud of his boots being kicked off and the telltale thud of his feet as he began to walk towards the bedroom where we were. My heart lifted in my chest and sobs of relief came pouring out of my mouth as I waited for Severide to help me. Above me, Matt continued his rhythm of hard swats to my ass.