Should I Skip My Sisters Wedding After She Dated My Ex?

A 27-year-old woman is staring at a wedding invite she never wanted to think about, after discovering her younger sister is dating her ex, Alex. And not in some vague, “maybe they’ve talked” way, but in a full-on restaurant photo situation with smiles, captions, and all the evidence she can’t unsee.

Here’s the messy part: Alex was her boyfriend until the breakup a year ago, and she believed it ended amicably. Then she finds out, through social media, that her sister kept this relationship quiet, even while months of wedding planning are already in motion.

Now the question is less “should she attend?” and more “what kind of sister shows up to your ex’s new chapter without telling you first?”

Original Post

So, I'm (27F) in a bit of a tough spot right now with my younger sister (23F). For some context, my ex-boyfriend (28M, let's call him Alex) and I broke up about a year ago due to some personal differences.

It was an amicable split, or so I thought. Last week, while randomly scrolling through social media, I came across a picture posted by my sister.

To my shock and disbelief, it was a cozy picture of her and Alex at a restaurant that I used to go to with him. They were smiling, and the caption hinted at them being more than just friends.

I felt a mix of emotions - betrayal, hurt, confusion. I didn't know they were seeing each other, let alone dating.

And the fact that my own sister would keep this from me felt like a massive breach of trust. Now, my sister has been planning her wedding for months, and it's coming up in a few weeks.

She hasn't mentioned anything about Alex being invited, but after seeing that post, I'm torn. I don't want to attend the wedding knowing that she's been secretly dating my ex behind my back.

It just feels wrong on so many levels. I've shared this with a few close friends, and opinions are divided.

Some say I should confront my sister before making a decision, while others believe that skipping the wedding would send a strong message about boundaries and respect. So, WIBTA for refusing to attend my sister's wedding after finding out about her relationship with my ex?

The Sisterly Betrayal

This situation digs deep into the complexities of sibling relationships, especially when romantic ties are involved. The OP's feelings of betrayal are palpable, especially since Alex was someone she had a significant relationship with just a year ago. The emotional fallout from seeing her sister with her ex is not just about romantic jealousy; it’s a visceral reminder of the trust that seems to have been shattered. The OP’s discovery through social media adds an extra layer of hurt, as it suggests her sister didn’t feel comfortable discussing this relationship openly.

It raises the question: how do you navigate love within a family when it feels like the lines of loyalty have been crossed? The dilemma is made even more poignant by the impending wedding, a time typically associated with joy and unity, yet now fraught with tension.

After OP spots Alex and her sister at that restaurant, the “amicable breakup” story starts to feel like a cover-up instead of closure.

Comment from u/PurpleUnicorn87

NTA - Your sister dating your ex without telling you is a major betrayal. She should have been honest with you from the start instead of keeping it a secret. It's understandable why you'd feel uncomfortable attending her wedding now.

Comment from u/TeaAndScones22

Clearly NTA. Your sister should have respected your feelings and been upfront about her relationship with Alex. Attending the wedding might be challenging given the circumstances. Your feelings are valid.

Comment from u/CloudySkies123

YTA - It's her wedding, not a place to bring up personal grievances.

Comment from u/MoonlightMelody

ESH - Your sister definitely messed up by not being transparent about dating your ex. However, skipping her wedding might escalate the issue further. Communication is key here. Express your feelings calmly and see if you can find common ground.

While her sister has been planning the wedding for months, OP realizes she hasn’t once been told whether Alex is coming, which makes the whole event feel preloaded with betrayal.

Comment from u/SunnySideUp99

NTA - Your sister crossed a line by keeping her relationship with Alex a secret. Attending the wedding might be emotionally challenging for you, given the circumstances. Your decision should prioritize your mental well-being.

Also, this echoes the dilemma in a family vacation that got derailed after a sister secretly invited her ex.

Comment from u/CoffeeAndChill456

Wow, what a messy situation.

Comment from u/GuitarDude78

NTA - Discovering that your sister has been secretly dating your ex is a significant shock. It's understandable why you would struggle with attending her wedding under these circumstances. Prioritize your emotional well-being and address the situation with a calm conversation.

OP’s friends are split too, with some pushing her to confront her sister, and others basically saying skipping is the loudest boundary she can set.

Comment from u/StarlightDreamer

Yikes, that's a tough spot to be in. NTA - Your sister should have been honest about her relationship with Alex, especially given your history. It's crucial to prioritize your own feelings and well-being in this situation. Consider having an open conversation before making a final decision about the wedding.

Comment from u/RainbowSprinkles43

Definitely NTA - Discovering that your sister has been dating your ex in secret is a breach of trust. Your feelings of hurt and betrayal are completely valid. Deciding whether or not to attend her wedding is a personal choice. Take some time to process your emotions and communicate openly with your sister to address the issue.

Comment from u/MusicLover2000

NTA - Your sister's actions were deceitful and a breach of trust.

And the closer the wedding date gets, the harder it becomes for OP to pretend she’s just attending a ceremony instead of walking into the aftermath of her ex being “replaced” by her own sister.

We're curious to hear your perspective. Share your thoughts in the comments.

Divided Opinions on Loyalty

The reactions in the comments section reveal just how divided people are over this issue. Some readers empathize with the OP and support her decision to skip the wedding, arguing that family loyalty should not come at the cost of personal happiness. Others, however, suggest that she should attend, pointing out that her sister deserves happiness, even if it means dating someone from the past.

This conflict illustrates a broader societal struggle with loyalty and forgiveness in relationships. Is it fair for the OP to impose a boundary that could alienate her sister during a major life event? The tension here is not just about romance; it’s about family dynamics and how we prioritize our relationships.

This story touches on the emotional intricacies of family and romantic relationships.

The emotional turmoil faced by the 27-year-old woman in this story stems from a deep sense of betrayal after discovering her sister is dating her ex, Alex, without any prior discussion. Finding out through social media rather than directly from her sister amplifies her feelings of mistrust, highlighting a significant breach of familial loyalty. As her sister's wedding approaches, the pressure intensifies, raising the stakes for both sisters and forcing them to navigate a complex web of emotions that intertwine love, loyalty, and personal boundaries. This situation serves as a poignant reminder of how romantic relationships can complicate family dynamics, often leaving lingering questions about trust and honesty.

If OP shows up like nothing happened, she might end up feeling like the only one who got left out of the truth.

Before you RSVP, see how one woman handled her sister’s secret fling with her ex.