Does this make me a homewrecker??

I'll use fake names here....so I've been friends with Josh since summer of grade 10. Graduated a year apart (hes one year older) went to the same college, both got jobs and then circles back and funny enough ended up working at the same place (no it wasn't planned I swear!)

The joke at work was that he was my work husband. It was just a joke. Nothing romantic.

About two years later, he started sleeping with a girl named Emma (yes he told me all about it because we are close like that). She got pregnant unintentionally and he felt obligated to stick it out with her. I get it. I personally don't believe he truly loved her. But I respect him for sticking around for his child.

Couple years later Emma was pregnant again and she talked him into marrying her. So he did. Two kids deep. They got married and finally moved in together.

Of course most things I hear about her is one sided because I rarely talk to her. I always talk to him. We work right beside each other. Apparently after the second pregnancy, she started getting more crazy. Crazy as in because he stayed late at work she smashed his phone when he came home. Or the time she was drinking so much she left the bar with a random guy and insisted that she didn't sleep with him even though she never came home. Or the time she smashed his truck windows with a bat because he had a buddy come over and they ignored her and left her with the kids. Now of course I only have half of some stories. But I've seen the smashed windows. I saw the phone. I saw the hurt in his eyes. Especially when he had to grab his two kids in the middle of the night and go to his moms because she was smoking crack on the kitchen counter in the middle of the day.

I have always been there for him. And always will be. He told me ages ago that one day if he ever left her, he'd be with me. I figured it was just dumb emotions talking.

Well. Eight months after he left her, he and I are now officially dating. I have a promise ring. But his divorce won't be final for one more month.

His kids are amazing. She only sees them every other Saturday with supervision from a case worker. I've fallen in love with the kids. I feel like they're my own. I've fallen in love with him. I never meant to get in the middle. Maybe a part of me loved him all along. But I never tried to steal him. We just ended up together. and I'm so happy. Am I wrong?