How to flirt with a guy in high school?

well wat i do tat made my bff fall for me was i always looked in his eyes and wen he would finish talking or anything i would smile and wen he needed help i would help him and if he was sad i would cheer him up so here the thing to cheer him up u could have da chance to tell him how u feel \so ill say tat wit a look and a lil smile tats it