I've rarely ever had my stutter be an issue with girls. Mention it upfront if you're meeting them for the first time. If it's someone you already know then they'll be aware of it. Some people will have an issue with it, but from my experience most won't. From there just be normal. You still have to get along with them, be fun to be around, etc. Don't get so hung up on your stutter that you forget to be a person.