So, i spent the entire weekend at my friend's apartment (we're both in our 1st year of college) and noticed something. i saw some crabs (pubic lice) in her underpants and skirts that were laying on the floor that she had worn just yesterday. she doesn't know that she has them. she keeps digging down there and its gross. i keep checking myself and i dont have them, but i dont know what to tell her. i am so shy about this stuff so i cant just say "how dare you have me over you little itchy ***** when you have crabs!" what should i do? i cant let her keep itching in public! (like shes been doing in college!)