When you start talking to girls and your heart starts pounding and you arent even sure if you can say your name. Just pause for a second, gather your thoughts and then talk. Ive found that taking slower, especially when you are nervous really really helps. It feels like you are talking at the pace of a turtle, but really you are talking at quite a normal speed, the nerves make you want to talk as fast as possible. And if you stutter, then just own it. You have a stutter, it happens, and if people dont get that then they arent worth your time anyway.