It is important to understand that there are a lot of girls on a planet and all our fears arise from the fact that we are afraid of losing this particular opportunity and that we will never have another opportunity.
Know that if you fail with one girl, you will succeed with the other. If you understand that you invented all your fears yourself, but in fact you have absolutely nothing to fear, then you will have confidence.
Always remember who you are, that you are unique and you are a real man. To relate to communication with girls is not the way that they choose you, but the way that you choose to be with them or not to be.