After a company drinking party, I let a colleague stay at my house after missing the last train. She is also my colleague and my best friend's girlfriend. I was drunk and started to woo her, and although she said she didn't want to have sex at first, she couldn't resist and...she fell for me easily! "I didn't think it would end up like this..." I ended up having sex with her over and over again until the morning! Then she got completely addicted to my sex, and even hid from her boyfriend (my best friend) who came looking for her out of concern, and asked me for sex!