<human>: Story:

As a teenager, I was never really "into" relationships. I didn't understand why people liked dating so much, what they meant by they "loved" their boyfriend / girlfriend, etc. One day, I met this fantastic girl. I immediately had this feeling of butterflies in my stomach and happiness in my brain. Long story short, we ended up dating for about 9 months, and then the girl cheated on me and broke up with me. I thought that I loved her. After the breakup, life seemed to be a bit dull. I realized that I didn't really "love" my family (I didn't get a happy feeling from them anymore, even though I would act like I did), I didn't enjoy hanging out with friends, nothing was fun, etc. This was about 3 years ago. Ever since then, everything has seemed dull, and although I will get "happy", it is never really from people or gifts - it is usually from some sort of thing that I did myself (finishing a project, pushing up my benching max, you know the likes). I hate to say it, but I am also a very manipulative person. I lie (for no reason, other than the sheer thrill of lying), I commit crimes (both violent and nonviolent), yet feel no conscience, and I plan my actions according to what will give me the most benefits (what should I say to receive a blowjob from a girl, what could I do to prevent being caught when committing a crime, etc). This has allowed me to get out of multiple charges with no convictions (with a few being felonies). What should I do? I have only noticed this change in my behavior and feelings after the breakup.

Summarize the given text in a few sentences.
<bot>: girl broke up with me 3 years ago, I thought I really liked her. Ever since then I have been showing sociopathic behaviors and thoughts. What should I do? I want to be a happy person.