Dates can be tricky since we're nervous even without a stutter. Add in a stutter and we're bound to stutter to more cuz we're nervous. Best to just try not to focus on your stutter but the conversation instead. You will stutter and that's fine, she's gonna see it sooner or later. Don't be ashamed of it and don't try to hide it. If it means anything, most people tell me they don't even remember that I stutter because it's in the background and they're too focused on the content of our conversation rather than my blocks, slurring, etc. Don't sweat it. You'll do great. Maybe go for a run or a workout beforehand to relieve some stress.