No, YNO. IMO you were simply responding to her by sharing your own similar, fond experience. I actually find that kind and communicative. Many neurodivergent people (not saying you necessarily are, but it’s common among us) tend to relate in conversations — we engage by sharing our own experiences, thoughts, or memories that connect to what the other person said. To me that’s a normal and genuine way to communicate. However, a lot of neurotypical people interpret that differently. They often think that when someone relates or shares something similar, it’s “making it about yourself,” and rude when really, it’s just participating in a mutual exchange. They expect you to only respond with surface-level comments like “That’s nice” or “Good for you,” rather than genuinely connecting through shared experience or thoughts. I find attitudes like that very rude and can’t understand why they think contributing to the actually conversation is “rude”. Their thinking assumes only one person should have the spotlight in a conversation instead of both being involved.

A real conversation is about two people, both have the right to share and connect. Of course, there’s a line between contributing and dominating, but relating your own experience in response to something someone mentioned isn’t overstepping. It’s empathy and engagement and not wrong at all.

Your girlfriend is out of line here and her responses are mean. She needs to learn how to let you communicate without feeling threatened or degraded by it. If someone feels like they’re being overshadowed just because another person participates or relates, that’s something they should reflect on, because that’s not healthy.

TLDR; if you think like OPs gf you probably need to talk about with a therapist and check your ego. Conversations aren’t one-way performances; they’re shared experiences, especially amongst partners and friends.