A couple of thoughts: 1. Reading your text shows me you are really good at expressing yourself. You are able to tell a person exactly how you feel (like I could from your text) and that helps a lot creating understanding. Be confident that he won‘t misunderstand you or that you‘ll „blow it“ because of how you expressed yourself. 2. Communicating that you stutter and that you feel ashamed makes you vulnerable towards him. Opening up towards someone is a huge compliment. It means „I trust you“ and that will be the primary message for him beside your stutter. If he is a nice guy it will strengthen your relationshit not put it at risk. I was scared as hell when I told my girlfriend (now fiancé) that I stutter but it was the best thing for our relationship. 3. If you are scared maybe begin by first mentioning it via text? Maybe like „I need to tell you something that’s important to me but I’m a bit too scared to first mention it face to face. Last time we talked I stumbled over the words ... I told you back then I was nervous, but it happened because I have a mild stutter. ...“. You can take a lot of the descriptions from your text above that was really good. 4. Never forget: Others don‘t care if we stutter :) Good luck and get back to us how it went!