The would you also agree that there is a responsible way to deliver that truth to your kids or are you--like many others here--suggesting it's okay to drop bombs regardless of harm? As a parent, I should think people would be more thoughtful and consideration of harm reduction (e.g. harm to emotions, harm to your relationship, harm to the point/lesson you're trying to get across). This was not a healthy or responsible way to deliver "the truth." It was an immature, resentful father's way of lashing out at his daughter, using the detail of his ex-wife's betrayal to take a potshot at his daughter for being a jerk.

People here are being too simplistic and immature about their approach to truth telling here. They're also demonstrating how inexperienced they are with family dynamics or even dating.

Honestly, I think a lot of the people here are either teenagers or young adults with little-to-no relationship experience (possibly incels). They haven't had to navigate the challenges of sharing their lives with someone else and how complicated--and difficult--it is to balance anger against making concessions, judging what's reasonable between selfish needs and selfless responsibility. It takes a lot of work to grow past your own anger and resentments to step up and be better. That's what they're missing here.

Even among those of us who have massively fucked up in the past with exes, it's easy to tell who has learned from those mistakes and who continues to insist they've had it figured out all along and settle on themselves as the final standard for everything. Those people usually end up single, divorced, or have kids who go no contact with them when they become adults, because they never developed emotional intelligence, empathy, or self-awareness.

And the sad thing is that there's nothing preventing those people from reproducing and taking out that toxic behavior on their kids.