AITA for not wanting to break up with my girlfriend/stepsister?

Bound by years of shared memories and young love, two souls found themselves entwined not only by their own bond but by the unexpected marriage of their parents. What began as innocent childhood friendship blossomed into a deep romance, only to be tangled in the complexities of a new family dynamic that neither had anticipated.

Caught in the crossfire of blended families and unspoken tensions, their love is tested daily by the awkward realities of living under one roof with those who once encouraged their union but now seem to view it through a lens of discomfort. In the midst of it all, the young couple struggles to hold onto their truth, facing the painful sting of judgment and the challenge of defining their own happiness.

AITA for not wanting to break up with my girlfriend/stepsister?

My girlfriend and I were childhood friends turned high school/college sweethearts. We are both 20 now and have been dating since we were 14. We are both commuter students at the same state college, so we still live at home.

The same home. Because our parents are married. It’s my mom and her dad. Both divorced when they met, you can imagine the rest. When we were in HS we begged them not to date because of exactly this reason.

Weirdly enough, while they were just dating they were totally fine with my girlfriend and I being together, but it pretty much changed immediately when they got married last year and moved in together.

Honestly, I hate being in this situation. Even though I know there is nothing wrong with us, it needles me every time my mom says “go tell your sister x”. I think she is doing it on purpose to get under my skin.

My (real) dad thinks the situation is hilarious and his view basically boils down to “What did you expect from the crazy bitch?” but I see him infrequently and our living situation would be very bad if we moved in with him (drugs) so that isn’t an option.

My girlfriend’s bio mom has not been in the picture for her whole life, so that’s not an option either. We can’t afford to get our own place until we graduate.

This living situation is driving us crazy, but we want to ride it out until we’ve graduated and have jobs and can get our own place, or a place with roommates. Our parents have become laser focused on breaking us up, calling us brother and sister at every opportunity and lecturing us about how disgusting it is, asking us aren’t we embarrassed that our friends know, saying that it’s not anyone’s fault that they got married first and this is just the way it has to be.

I love this girl and have spent my life with her. I want to spend the rest of my life with her. I just can’t stomach breaking up when *we* are fine and it is this bizarre outside circumstance trying to drive a wedge between us.

Here’s how people reacted:

2715murder

NTA if they dated and married AFTER you guys started dating. Think of it this way, you didn’t *start* dating your step sister. your mom *started* dating your girlfriend’s dad.

When she pulls the “sister” card, act dumb.

“my sister?? who? Oh! you mean my girlfriend”

“sister..? mom.. do I have a sibling you haven’t told me about?!?”

Now onto her ranting. that’s projection. she’s projecting the disgust onto you two to cope and belittle her awful boundary stomp. Her saying that you’re dating your “sibling” takes the focus off the fact that you two are legally siblings because SHE married your spouses dad.

right now you’re gonna have to tough it out and show her you don’t care. But save money to move, make plans and deadlines so that you can get out of there with or without your gf. the boundary stomp and projection are abusive traits.

and for validation sake, the rest of the world thinks your mom and her dad are the gross ones.

sfle05

You are so NTA here. It sounds like your parents are the ones with the real issue with your relationship so they’re resorting to shaming you for their own insecurity. They ignored your pleas not not date and now that they’re married they’re calling YOU disgusting for a situation THEY caused? You aren’t blood related and you weren’t raised as brother and sister. You guys have nothing to be ashamed of. Shame on your parents.
pks267

You and your girlfriend NTA

Your mum and her dad- YTA

There’s no need for you and her to breakup. It’s a tough ride but keep going. At the end of the day you’re in a relationship with her and you love her.

If you broke up because of your parents then you will regret it for the rest of your life. You would not be happy that you broke up with someone who meant so much to you to keep someone else happy.

lunar_lena

NTA. It’s your mom and her dad’s fault this happened if they started dating after you two did. Honestly, it’s inappropriate of them to have done what they did, but you are completely fine. They should have waited until you and your girlfriend moved out to get married, to avoid this situation. I can only imagine how difficult and uncomfortable this is for you, but just know that you are not in the wrong!
Scully007

You are NTA!!! This happened on Teen Mom were the two were going out then their parents met and got married, so did the two kids. They are all cool with it. I’m sorry about your situation, your mom is being a dick! I would be pissed at her for doing that to me. Stay strong for you and your girlfriend! Ride it out and when you are ready to leave, leave them behind!
NotJessicaSimpson

NTA.

You are not bad, your parents are for treating you this way.

You were dating before they were. It’s not YOUR fault due to their relationship they have made you siblings. Completely non blood related siblings.

It sounds like the best thing you both can do is work hard, save up, and move out at the first available moment to avoid their nastiness.

VengeanceIsSleeping

NTA. I had friends that this happened to, they were dating for years, their parents then started dating and got married pretty quickly, and they got a hard time about being together but they stuck it out. Their parents ended up getting divorced, they are still together. It’s been like 15 years, their parents marriage lasted something like 2 years.
UsualRaspberry

NTA. You and your girlfriend have been together longer than your parents have been together. You need to have a conversation with them about this. Why do they think your relationship is a problem? Why do they think you should break up? It seems like they’re making their relationship a priority over yours, and there’s absolutely no reason for that.
cocopuffscocopuffs

NTA. You were dating before they were dating- your not related- I see no issue. Your mom and her husband need a reality check. You are not siblings- you did not grow up as siblings. It was her choice to date her sons girlfriends dad, if she thinks it’s weird that’s her fault.
Sandmint

NTA. You and your girlfriend have been together far longer than your parents. Your parents are ones who are making it weird. If anything, your friends probably think it’s weird that your parents got married and are trying to break the two of you up after six years.
CitrusGasoline

NTA. This is an awful situation, but since you didn’t grow up as siblings, I don’t think it’s weird. If your parents had been together for a very long time and *then* you started dating, that’d be weirder, but this is just a shitty thing from both of your parents.
Bovaloe

Assuming you and your GF are sexually active, just throw the awkwardness right back at your parents.

Them: Where were you?

You: Oh, just up railing my sister

DuskShades

NTA.

Realistically, you guys were together before they were. You would be more in the right to ask them to get divorced than for them to ask you to separate!

uhwhattimeisit

NTA

Go to a registry office and marry your girlfriend, then only refer to her dad as “my father-in-law” in front of your mum

MarsNirgal

NTA. Not that the situation is inappropriate, but if it were, you didn’t make it inappropriate, your parents did.

Conclusion

The original poster (OP) and his long-term girlfriend are experiencing significant emotional distress due to their parents’ marriage, which has suddenly placed them in the awkward and uncomfortable position of living together as step-siblings. Despite their strong relationship and commitment to each other, the consistent pressure, verbal reminders of their new familial ties, and outright hostility from their parents regarding their dating relationship are causing severe strain.

The central question remains whether it is inappropriate for two committed adults to continue a relationship while living under the same roof as their newly married parents, especially when the external pressure, rather than their own feelings, is the primary threat. Can the relationship survive this imposed familial structure, or does the unique living arrangement necessitate a separation for the sake of peace or propriety?

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