Now let's not go extreme. Because one likes anime does not mean they're a weeaboo/otaku. But it definitely likely means they're a nerd. That said, why would you WANT to watch anime with a girl, and why is it a priority? Watching the occasional anime, cool. But you're 30, bro. Shouldn't your priority when it comes women be beyond menial and irrelevant things such as whether or not she likes anime? I got over this in fuckng high school, dude.