Why do I feel like I have to be someone else for guys????

Hi everyone. I am a very friendly person who loves people. Why can't I be myself without guys thinking I "want" them. I have a long term boyfriend but I love making new friends - male or female, I couldn't give a rats. I am sick of just being myself and having guys think I want to have sex with them! I am NOT touchy feely, I am NOT complimentary. I just like having a laugh and making friends! Grrrrrrrrrrrrr!