I’m helping her make a smooth transition out of her relationship

I’m currently the ‘other guy’ in a cheater relationship.
Let me get this out of the way: They’re not married. That said, here’s why I have no regret about this:

He treats her like shit. He completely neglects her at best, has smacked her around several times, orders her around, expects her to wait on him hand and foot, and generally acts like a pompous dick. The ONLY reason she still lives there is her kids. She has two kids with him that are her first priority. She doesn’t want to lose them, so she stays and tolerates it for now until she can make sure they’re secure and safe.

We’ve been friends for a few years, and dated briefly last year when she left him, but went back because he was threatening to take the kids away, even going so far as to kidnap one of them and hide him at his grandparents’ house and send me death threats which I promptly forwarded to the Sheriff’s dept. She went back to shut him up, get her kid back, and plan her escape.

We’ve been dating again since November. In that time, she’s worked with her lawyer to make sure she has custody, saved up a few grand to make sure she’s financially secure during the transition, and in the last few weeks, started slowly packing her things and putting them in storage so he won’t notice.
She’s making the jump in 2 weeks. We’re getting a house in another town, changing her number, and only allowing contact through her lawyer or supervised visitation. She has no intention of cutting him out of the kids’ life entirely, because despite how shitty he treats her, he’s still a decent father, but she doesn’t trust him one bit.

Her mother knows about me, absolutely loves me, despises shithead, and is helping her with this plan at every opportunity.

There have been a couple other times in my life where I’ve fucked up and been the ‘other guy’ and I’ve always felt like shit about it and let it tear me up inside.

This time I have absolutely no regrets. He’s a unstable, abusive sack of shit and deserves what’s coming to him.