My friend has a boyfriend problem and she wants to know if someone can help her.?

ok well she has a boy friend named joe and she doesnt thinks she likes him and she thinks he's way to clingy. but then she likes another guy named Dustin. and she said he's really cute but she doent think she could break up with joe because she knows he likes her so much. and she really likes dustin. so does anyone know a way for her to make joe break up with her? because she wanted me to do it but im good friends with all three of them so does anyone know how to make joe break up with her??