Is it normal i wanna marry my girlfriend already?

We just got together and I already could spend the rest of my life with her. We were friends for years before. She's actually the older sister of my other friend.

We are so close, we already sleep in the same bed most nights and we text each other when possible at work to make sure the other is having a good day. We sometimes share clothes and shoes because we have a lot of the same size proportions.

She makes me laugh even when she's not trying. Her voice melts me inside when I hear her speak. I could listen to her for days. She's really sweet too and always says the right thing. So much I like about her. I was in love with her way before she even knew she liked me.

So. I want to marry her. Even though we've only been together for a week. Is it normal?