<human>: Hi Reddit,

Throwaway account here...

I have known "John" since college and we were always friends. We started dating senior year but I broke it off when we got in a huge fight. Because of the nature of the fight, I assumed we would never speak again. I completely cut him off. 

Fastforward three years...I'm in graduate school. His twin sister "Emily" had been in a similar program across the country a year prior. In a moment of desperation I (very, very, very) stupidly plagiarized small parts of something she wrote, and through a series of events, she found out. 

She had no idea I used to date John (Emily and I never met) and she blackmailed me into paying her a large sum of money to keep quiet about the plagiarism. The plagiarism was extremely minor (really) but I would have been expelled from my program had I been found out. I am 99% sure Emily never told her brother what happened. They aren't extremely close and she thought John and I were just casual friends. 

Now, three years after that, John and I run into each other. One thing leads to another and we're dating again. It's getting semi-serious, and I just know I'm going to have to meet his family soon. 

I don't know what to do. OBVIOUSLY Emily is going to recognize me...my name...put two and two together and tell John. I think it's pretty clear I need to tell John what happened before I meet Emily, who, by the way, was a MAJOR bitch. (Not excusing what I did at all, but trust me, she showed ZERO compassion or understanding).  

My question is, how do I tell John? Should I approach Emily first? I am so afraid this is going to ruin our relationship, his parents' view of me, etc.

Can you give me the gist of the text in a nutshell?
<bot>: I plagiarized my new boyfriend's twin sister before we started dating. How do I tell him what happened without ruining the entire relationship?