what should i do ???

there's this girl who ask 4 a help . she liked this boy very much , but she doesn't know how to tell him . because that boy was her sister friends . i dont know what to say but . this girl she already has 2 boyfriend , she do love "the boyfriend" both of them but her heart was at the other guy that is no one with her . her fall 4 her boyfriend because of the looks but at this 1 guy because of his charateristic . he's a nice guy ,funny , cute , he also know how to make someone sad to be happy . he's a perfect guy but she's not perfect for him . in his mind (the guy) that girl was only a PISAU CUKUR who only love the money not the person . but 4 real that guy doesn't know that the girl was not like that . so can someone help me find the answer . the girl really am like that boy so much . but what she can do is only talk ,make jokes , ask anything accept about the feelings . she always keep that feeling alone without telling the guy because she doesn't know how to tell .the end , we will continue later . tata ;)