<human>: We've been together for 4 years , living together for 3. She lives in the house I bought right before we met and everything  is "ours". We meshed everything pretty easily and quickly as we've known each other for a long time (since middle school)  and committed quickly.  

We're getting married on the 19th for formalities. We just came to a casual, logical agreement that it was time a few weeks ago. Both of us have pretty strange/crazy families and we want to be protected legally if anything happens to the other. More importantly, we're getting married because we plan to stick with each other forevs . We're taking a half day and going to the courthouse before work, very nonformal. However, I still feel like it's a pretty huge step,  considering the social and legal implications of marriage.

She thinks it's just a necessary evil and really doesn't seem to attach sentimental feelings for it.  This bums me out. I'm excited to tell friends and family. She figures they know we might as well be married so what's the difference if we are? 

We've talked about it and have agreed to disagree. I'm designing announcements while she is pretty much indifferent,  though she does say and act like she wants to stick with me for the long run. I feel like a reverse stereotype and I don't know if I should see this as a red flag.  

Is indifference  to the formality of marriage something to worry about if everything else is fine? I am thinking that it doesn't matter  but I kind of wish she'd show some excitement about it.

Summarize the given text in a few sentences.
<bot>: GF and I agreed to get married in a few weeks and she isn't excited about the actual marriage. Red flag or NBD?