Cute girls or reg girls answer pls lol?

Simple question.. NOt bad looking some say im cute and have a nice surfer body ...SO why when I'm with a friend or basically some stranger with me and I'm talking to a cute girl or reg, They always talk to them instead of me kind of like avoiding me WTF ... Sometimes I feel like a ghost or something can you tell me why? Do i make them feel that uncomfortable ? pls tell