<human>: Can you summarize the given text in a few sentences?

I'll try to keep this as small as possible. She and I only got married last year, and she one day decided she couldn't commit to a relationship, said some very hurtful things (e.g. when she goes out to clubs, and people try it on with her, she doesn't want to have to tell them she's married) and completely ruined me for many months, always keeping me on with a small bit of hope. 

After some time (around 7 months) I said enough was enough and it was time I start accepting the fact that we were done. A few months later I met someone else and things are going great, but my wife has just said she made a massive mistake and wants me back. 

As far as I'm concerned she had her chance, there is no way I could go back there after everything she did and how she treated me, and I see a real opportunity with the new person in my life. I've told her straight it's not going to happen, which she is unhappy about, but should I feel bad about this? Because honestly I don't give a shit - she can't just decide when she has had her fun and wants me to go running back. Fuck her, right?
<bot>: wife put me through hell, I found someone new and now she wants me back. Not sure why I'm posting because it's not going to happen, but opinions welcome.