AITA for sleeping with someone else after my boyfriend(22M) and I(22F) agreed to an open relationship for my time abroad?

A 22-year-old woman heads to the US for her dream Master’s program, facing two tough years away from her boyfriend of one year. Both with strong physical needs, the long separation feels impossible without some arrangement. After intense discussions, they settle on a temporary open setup with clear limits: only physical, no feelings involved, always use protection, and tell each other within 48 hours—no names or extra details needed.

Three tough, lonely months in, she meets someone at a club, keeps it strictly casual and one-time, follows every rule, and calls her boyfriend the next day to share what happened. Instead of working through any discomfort together, he completely loses it—ignores the agreement, hurls insults about her being “easy” or “cheap,” blames America for changing her, admits the whole thing was secretly a loyalty check he never expected her to pass, dumps her, and spreads nasty stories to mutual friends. She’s left stunned: she stuck to what they both decided. Was she wrong?

‘AITA for sleeping with someone else after my boyfriend(22M) and I(22F) agreed to an open relationship for my time abroad?’

It all started with the terrifying reality of two years apart right when their relationship was still so new:

The first few months in the US were brutally lonely and hard to adjust to:

What came next shattered everything she thought they had agreed on:

The heart of this mess is an agreement meant to bridge distance that one person clearly wasn’t prepared for in practice. She followed every guideline precisely: kept it purely physical, used protection, disclosed immediately without unnecessary details, and attached zero emotion. He, however, framed the whole setup as a hidden loyalty check—a tactic that undermines trust and turns consent into manipulation.

The flip side often involves intense insecurity or mismatched expectations. Many enter these arrangements assuming one partner will stay uninterested while the other explores freely. When reality hits differently—especially if the woman finds casual connections more easily—the backlash can turn ugly, with insults and blame-shifting. This reflects broader double standards around gender and desire, where women face harsher judgment for the same freedoms men might expect.

Culturally, non-monogamy still carries stigma, particularly for women, fueling quick leaps to shaming language. Relationship expert Esther Perel has noted that jealousy often stems from fear of inadequacy or loss of control rather than the act itself: “Jealousy is not a sign of love; it’s a sign of insecurity and possessiveness.” (From her work on modern relationships and desire). Without honest talks about those underlying fears beforehand, agreements crumble fast.

Moving forward: Any non-exclusive setup demands ongoing, vulnerable check-ins about emotions, not just rules on paper. If “tests” enter the picture, that’s a major warning sign—healthy connections don’t rely on traps. For her now: lean into the freedom of her new chapter, process the hurt with supportive people, and recognize that someone who rewrites agreements retroactively to punish isn’t ready for mutual respect. True compatibility in open dynamics requires both sides to handle reciprocity without resentment. Prioritize self-respect and clear communication in future relationships—whether open or closed.

Here’s the feedback from the Reddit community:

The internet had a lot to say—and most people are firmly on her side:

Pretty much everyone agrees she followed the rules they both set, so the real problem is him not handling the consequences of his own suggestion:

Some comments came with sharp, short humor:

A few pointed out both sides made a risky choice:

And one final clear take:

This story exposes how fragile some agreements become when real feelings clash with expectations. She honored every detail they set together, yet he flipped the script with blame and insults. Healthy relationships—open or not—thrive on genuine mutual respect, not secret tests or one-sided rules.

What do you think—was she wrong for acting on the agreement, or did he break trust first? Have you seen open setups work (or crash) in long-distance situations? Drop your take below!