Should I feel bad for exposing my ex girlfriend cheating and possibly messing up her new relationship?

So my ex girlfriend of 8 years cheated on me with a friend of hers then left me for him, we tried being friends but she kept being cold towards me. Long story short she ended up cheating on her new boyfriend with me a few times and even planned on marrying me behind his back to help me with a court issue. She ended up not showing up to the wedding after having me spend a lot of money. I ended up telling the new guy&his family everything with poof text messages marriage license photos everything.
I notice she was home during a day she always spent at his house so I changed her Hulu name to bubble butt then got kickrd of our hulu account
Should i bad? She would have been with her for 5 months and it's been a month since I told him everything
Should I feel bad for exposing my ex girlfriend cheating and possibly messing up her new relationship?
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