I was dating a girl for 3 years. This girl was a submissive freak in the bedroom and a very respectable lady in public. MY parents loved her. 2 years in she was talking marriage, but we were not getting along at all. She was a complete head case and was always worried I was cheating. Before the 3 year mark a mutual friend told me she was seeing a 50 year old guy. I was 24. I confronted her and she said they were just friends. The mutual friend was male and I had known him my entire life. So eventually she broke down and told me she was only physical with him a few times. I made her get tested and so did I. We were both clean. One of my longtime friends was gay and unfortunately showed me he had recently come down with chlamydia. So I asked him a huge favor, I told him I had a fantasy of getting a STD. He sucked me off a few times that week and a few weeks later my wish was granted. I initiated sex with my girlfriend a few days a week for a month. One day she called me crying saying she was experiencing symptoms of a STD. I broke the news to her that I had given it to her. Letting her know not to fuck with people’s emotions. She apologized and practically begged me to keep her. I invited her over and had the roughest anal we had ever had, She was wincing and crying out in pain. I made her finish me off by sucking my dick. She was gagging the entire time. I came down her throat and spit in her face. She spent a good hour puking in my tub. I threw her clothes out of the window and wouldn’t allow her to sleep in my house. I didn’t call her back for a while. She filled my voicemail and even slept on my lawn for a few nights. I left a note for her one night saying “How did your ass taste? Enjoy the old man dick?” She still calls me and has even threatened suicide. I never call unless I need a quick humiliation fuck. I’m a horrible, horrible, horrible person.