Stay out of your own head. We all have good dates and bad dates. Dates that end early, and dates that last the weekend. When you go on a date, have fun. That's what dates are. Opportunities to have fun and get to know each other. If it's not fun, find someone else to have fun with. Be yourself. Don't worry what he thinks of you. What did you think of him? Honestly, that's the only thing you should be thinking about. Assuming you enjoyed yourself... Give him the respect to not try to guess what his impression of you was. Next time you talk, ask him if he enjoyed himself. If someone doesn't like you because of your stutter, that's a great litmus test.