AITAH for ending the relationship after gf called my dream of wholesome family a ‘breeding kink’?

AITAH for ending the relationship after gf called my dream of wholesome family a ‘breeding kink’?

I (33M) am with my girlfriend (29F) for 3 years. Things were really good, intimate, happy, no big issues. I have always imagined a future with kids and marriage, especially since I never had that growing up due to my parents’ chaotic marriage and ultimate separation. I felt strong about our relationship. I thought we were aligned on the important things (career, religion, politics etc). We often talked about marriage and she always mentioned in details what kind of marriage would she want etc and how she can’t wait to feel big and be a mother of many babies.

This Valentine’s Day, I proposed, thinking it was the perfect moment. But instead of a yes, she told me she didn’t want marriage or kids. And when I pressed her on asking about what was when she always said to put a baby in her and that she can’t wait to have my babies? She said the whole thing of wanting to be my wife was a roleplay. Then she said it was just sexual and she just thoight of it as a breeding kink. Who does that?

I was completely blindsided. I’ve been intimate with her for years, and I thought we had a future together. To hear her reduce my dream of a family to a kink was a punch to the gut. She said she didn’t want to lead me on anymore and I ended things right there.

I’m crushed. I thought we were aligned on our future, but now I’m wondering if I was just being naive. So, AITAH for proposing when I thought we were ready? Or is she in the wrong for leading me to believe we wanted the same things, only to turn it all into a joke?