My girlfriend in college had been the victim of some pretty severe sexual abuse during her childhood. She was attending regular group therapy sessions, but she still had some pretty severe issues with it, understandably so. One Friday, after classes, she told me that she was going to therapy that night, and that is was likely going to be an EXTREMELY difficult session, and wanted to know if I could keep my schedule open so she could have someone to talk to afterwards, if she needed to. Being the regular social butterfly I was, I had nothing planned anyways, and so was available for anything and everything.
The session was as difficult as she had anticipated, and so I spent the entire evening comforting her and listening to her tell me about the abuse she'd suffered in shocking detail. I ended up sleeping on her floor that night. I was living off campus, and was out of it by the time she finished talking at about 2 in the morning, and although we were "active" at the time, we agreed that she didn't need me snoring in her ear after the evening she'd had.
I slept like a rock, even though the floor was hard and uncomfortable. I woke up the next morning in her warm, comfy bed, with no idea of how I got there. Worse still, she was sitting at her desk, and when I said "Good morning", it was quickly clear that she was very much not happy with me. I crawl out of bed to find that I am no longer wearing my pants, and I begin fearing the worst. After finding my pants, I begin appologising profusely to her, along the lines of "Honey, I don't know what I did, but whatever it was, it was stupid, wrong, and I'm very sorry for it." Finally, she opens up.
"Dan, I woke you up last night and asked you to come to bed. You got up, crawled into bed, and started to go to sleep. I asked you if you were forgetting something, and you got up. I thought you'd gotten the message. I started pulling off your pants, you stepped out of them, grabbed your pillow off the floor, crawled back in bed and passed out."
So I was the bad guy for not taking advantage of my emotionally traumetized girlfriend. But it doesn't end there. I finally got her calmed down, she was all smiles and happy and great, I proposed we move the good mood in a bed-ward direction, which she agrees to, we're making out, hands are wandering (both of ours, I was just following her signals), when her mood very suddenly swings. In a matter of minutes, I go from making out with my girlfriend, to her sobbing, to me making a Circle K run for M&M's.
I repeat this story to myself every now and then to take the sting away from being single.