AITA for not inviting my Dad’s mistress, now wife, to my wedding?

A bride-to-be faces backlash from her dad for not inviting his new wife—his long-term mistress who broke up his marriage to her mom—to her upcoming wedding. The mistress (now wife) harassed the mom online, gloating about “winning” him and insulting her as a failure and greedy.

The bride prioritizes her mom’s peace on her special day, especially after years of family turmoil including prior cheating and a nasty divorce. Dad argues it’s standard for exes and new partners to attend kids’ weddings, but she points out the cheating context makes it different. Tensions boiled over in an argument, leaving her wondering if she’s wrong.

The marriage was rocky long before the final affair came to light.

His job change led to distance, but the real bomb dropped years later.

She’s met the new wife but won’t include her due to past cruelty.

Dad pushed back when told, but she stands by her choice.

This wedding invitation conflict underscores how infidelity’s aftermath can poison major family milestones for years. The bride’s exclusion of her dad’s new wife stems from loyalty to her mom and fear of drama, especially given the online harassment—valid concerns that prioritize emotional safety on her day.

Dad’s insistence on “normal” inclusion overlooks the cheating’s unique betrayal, treating it like an amicable split. Relationship experts note that forcing contact in high-stakes settings often backfires, amplifying resentment rather than healing it.

The new wife’s antagonistic posts crossed boundaries, eroding trust and any chance for quick integration. Therapists advise children of divorce to set firm limits when new partners show disrespect, protecting vulnerable parents without cutting off the offending one entirely.

Ultimately, weddings belong to the couple—guest lists reflect their comfort. If dad boycotts, it’s his choice, but the bride models healthy boundaries. Future separate celebrations might rebuild ties if behavior improves over time.

Here’s the comments of Reddit users:

Most agreed her wedding, her rules—protecting mom trumps dad’s wishes.

Others warned of escalation but backed excluding her.

Simple reminders that it’s her day, her guests.

Weddings should celebrate love, not reopen old wounds from affairs and online bullying. The bride’s choice honors her mom’s dignity while inviting dad shows balance. Dad may feel torn, but pushing risks alienating her too. Family blending takes time and respect—maybe future events allow inclusion if behavior improves. What would you do—invite for dad’s sake or keep peace for mom?