How can I be confident around girls?

Strong eye contact is number one. People who lack confidence typically cannot hold very strong eye contact. Taking bold moves is another way to show confidence, like putting your arm around somebody and not waiting for a sign for every single moment just to try something. Taking that initiative shows confidence, because you're not walking on eggshells and you're not worried about every single moment and doing the wrong thing. Speaking strongly is another good one—you don’t want to have a fake voice, but you should use your full, natural voice. Standing straight, keeping your shoulders back, and not having your hands in your pocket also projects confidence.