Only the tone-deaf and the unconscious can hold out for long. Anyway, you must try to save your unfortunate friend before she succumbs completely. People suffering from crooner's syndrome lose touch with reality. It is essential to take her to lots of pubs, parties, clubs etc. Her stereo equipment if you have to.
Total abstinence is the only way.
Granny Dear Granny, I am in severe lust with a friend of a friend. However, I will say that fellas do not seem to be great at subtlety so fluttering the odd eyelash in his direction may not get you very far. The first thing you have to do is be in the right place at the right time. Friend remembers urgent business elsewhere and you can start using all your charm on lust object until he's wondering where you've been all his life. Granny Dear Granny Murphy, I'm seventeen and going off to college in the summer.