So, in this story, no one is blameless. As a sophomore in college, I was paired with a random roommate after I didn't get an (almost guaranteed) RA position. Since I thought the job was mine, I didn't put any thought into finding a roommate for that year.

At first everything was okay. She was guarded, very sarcastic but could be funny at times. She was smart and witty. We got along okay.

That is, until she started bringing her best friend over all the time. This girl was loud, and oftentimes downright mean to my roommate. It soon became apparent that they were actually closeted lesbians. I found this out by mistake, but they soon told me the pretty sad tale of how they couldn't tell their families for fear of backlash.

Their relationship, however, was very much of the not good persuasion. They fought all the time. One or both of them would end up crying most nights, and I'm just sitting there at my desk trying to read, or listen to music through my headphones, and I could never have people over for fear of grossly awkward situations.

Eventually though, I did decide to bring a friend over. We'd been sort of thinking about dating, and he stayed with me for a weekend. Here's the part where "no one is blameless." Said friend and I decided to have really quiet, very boring missionary sex in the room while my roommate was snoring asleep. Neither of us made a sound for fear of waking her up, and I was sure we got away with it.

Until the next morning. She was her usual snarky self, except more so. She wouldn't speak to me except as a necessity. "Shit!" I says to myself, I says. She must have heard us after all, and now I am that roommate who everyone fears they'll be paired with. My guilty racked up over the next few days as she became more and more nasty towards me.

At that point, I couldn't take it any more. I had to make things right. I wrote her a letter explaining how sorry I was for what we did, and it'll never happen again, and I'm just the worst and so disrespectful and horrible and oh god can you ever forgive me.

That letter was actually the first she'd heard of it.

I moved out after that one semester, and that random roommate is another story altogether.