AITA for being cold to my ex-fiancé and demanding a paternity test after her infidelity?

In one of the more explosive modern relationship sagas, an ex-fiancé tells a story of betrayal, heartbreak, and a desperate need for truth. After nearly a decade together—from high school sweethearts to engaged partners—the revelation of infidelity shattered what he thought was an unbreakable bond. Now, with undeniable evidence of his ex’s secret trysts and her deliberate lies about the paternity of her child, he’s left reeling and determined to set the record straight.

Now facing a crossroads, he has chosen to cut all ties and demand a DNA test once the baby is born. His actions have sparked mixed reactions among his circle of friends, with some labeling him as justified and others suggesting he’s overreacting. But as emotions run high, he wonders if his need for confirmation is clouding his judgment or if he’s simply seeking the justice he deserves.

‘AITA for being cold to my ex-fiancé and demanding a paternity test after her infidelity?’

When emotions run raw and trust is shattered, navigating the aftermath of infidelity can be incredibly complex. Dr. Emily Hart, a relationship psychologist, explains, “When faced with betrayal, especially in long-term relationships, it’s natural for intense emotions to demand a form of closure or validation.

Requesting a paternity test isn’t inherently vindictive—it can be seen as a call for transparency and accountability.” Dr. Hart emphasizes that while seeking proof is a legitimate step, it’s important to approach the situation without allowing raw emotions to escalate conflict.

She suggests that if one’s actions are driven solely by hurt and anger, it might be wise to consider mediation or counseling—even if only for a short time—to ensure that decisions made in the heat of the moment don’t lead to long-term regret. Ultimately, the decision to demand a DNA test should be accompanied by a willingness to accept any outcome while also protecting one’s own emotional wellbeing.

Here’s what the community had to contribute:

A common thread among commenters is that his reaction, though harsh, appears justified given the evidence of betrayal. Many argue that if he’s been deceived repeatedly, insisting on a paternity test is a fair demand. Others note that while his decision to cut off contact is understandable, the fallout may leave lasting emotional scars on all parties involved.

This case leaves us with tough questions about trust, responsibility, and how far one should go in seeking validation after betrayal. If you were in his shoes, would you insist on a paternity test and sever ties completely, or is there a middle ground that could allow for healing without further heartache? Share your thoughts and experiences in the comments below—let’s dive into a respectful discussion on where accountability ends and forgiveness begins.