I need help wit finding a girlfriend?

I have never had a girlfriend, i guess i just dont have th courage or something.... it seems that whenever I approtch a girl, they instintly reject me. I don know what to do. I hve always been the nice guy. and you know what they all say, nice guys finnish last. I see my friends, and they all have girlfriends. I just would like to make my life better. because this is suppost to b the best times of my life, if these are the best, i dont wanna be here for the worst.