I don’t know how much this will help but I’m also 19 and my bf, 20, has a stutter the way he said I made him comfortable is when we first met he allowed me to ask questions, before him I never met someone with a stutter so I just asked like what he’s comfortable and what he isn’t and that was 3 years ago. What helps us is “tells” if he’s having a conversation with someone and he doesn’t feel comfortable finishing what he’s saying he gives me a look or a hand gesture and I know that’s my que to continue it for him. It took some adjusting but I wouldn’t have it any other way. Just don’t be shy, it took him a few dates for him to actually open up and start being comfortable with talking, I just suggest being straight up, say you have a stutter say your boundaries and if they react negatively in away they aren’t for you. I hope you find someone. I love my boyfriend and my whole family does too, I genuinely never met someone who is so intelligent with their words I love hearing what he has to say he’s so fucking funny. Sorry if literally none of this helps but I wanted to try. :)