I broke up with my girlfriend because she kept disrespecting my sister. Please tell me I did the right thing.

I (20M) just ended a two-year relationship with my girlfriend (20F), and honestly, I’m still trying to catch my breath. It wasn’t a random breakup. It happened because she constantly bad mouthed my sister (29F), and I just couldn’t take it anymore.

Some backstory: our dad passed away years ago. It’s just me and my older sister, and she pretty much carried our family after that. She passed her board exams and started working right away so she could support us. She paid for my education and handled everything at home without ever complaining. She’s one of the kindest people I’ve ever met, soft spoken, generous, and very family oriented. I look up to her so much. I respect her more than anyone.

When I introduced my girlfriend to the family two years ago, my sister and mom welcomed her with open arms. She was invited to every family gathering, got gifts during the holidays, my sister even baked her a cake on her birthday. She went to Singapore once and brought back a souvenir just for her ,a Labubu keychain, because she remembered she liked it.

And my girlfriend? From the start, she always thought my sister was “fake.” She’d say stuff like, “Nobody’s really that nice,” or “She feels hypocrite.” She never vibed with her and kept saying she couldn’t feel her sincerity. I brushed it off, thinking she’d eventually come around. But it never stopped. Every time she made a comment like that, it hurt, but I kept giving her the benefit of the doubt.

Then came the final straw . My sister and I were at the mall and she told me to pick two pairs of shoes, one for me and one to give to my girlfriend. She didn’t know that this girl had been talking behind her back all this time. I asked her if she wasn’t buying anything for herself, and she said no she was saving up to buy our mom a washing machine instead.

I felt so heavy inside. Like, how can someone be so thoughtful and selfless and still be misunderstood?

Later that day, I messaged my girlfriend that my sister got her something . Her reply? “I didn’t ask for anything.” That’s when it hit me. I love my girlfriend, but I love and respect my sister more. I couldn’t keep defending someone who had no respect for the person who’s done so much for me, for us. So I ended it.

My sister doesn’t know any of this. She’s out there in the living room right now crocheting little sunflowers. I just hugged her earlier and told her I loved her and thanked her for everything.

I’m breaking things off officially with my girlfriend tomorrow. I already made up my mind. I just needed to put this out here and ask did I make the right call?