Telling a girl I stutter / speech block?

Telling a girl I stutter / speech block? I’ve been speaking to a girl I used to know from school, we both used to like each other at school but nothing really happened between us. I did have the same issues at school but I seemed to be able to hide it and manage it better back then ? Last few years haven’t exactly been my best, it took a while finding a full time job after leaving school, probably have developed some sort of social anxiety, I’m trying to get out more but I’ve acquired a bad habit of avoiding situations which involve me speaking (so literally everything). We’ve only been texting but we’re going to a concert together in a few weeks time and she’s staying over. I really like this girl, always have, she’s told me how she feels about me. But I feel like I’d never be enough for her. In my current state i don’t know how I’d take her out and treat her the way she deserves, and meeting her family etc. My stutter isnt really bad, sometimes I sound perfectly fine sometimes I’m substituting words so much i sound so stupid or even better I just straight up can’t speak. This girl means a lot and she deserves better. So I don’t know what to do. She told me how she felt about me a few years ago and i fucked it up because of the same thing. I definitely feel my stutter wasn’t as noticeable then but now it’s not the just the stutter I fight everyday but my own head. I definitely mentioned it to her in the past but I think she would have definitely forgotten and I feel like it’s worse now.