Where can I find a girl like this and have this kind of relationship?

I want a girl with dark hair that's around my age. I want us to have a some common interests such as both enjoying classic rock, video games, and loving Star Wars but at the same time I want there to be some differences between us. However I want her to be a female version of myself and I want to have a me and her against the world relationship. I want us to have a very intimate relationship and when I've had a bad day I'd like for her to be someone to comfort me. I'd do the same for her too. I want her to be accepting my OCD and anxiety. I'd also love for us to have tickle fights and wrestle each other. When I meet someone I want to show her off to the world. Where and how can I meet someone like this?