After you befriend Harris, he will tell you who he likes. Walk out of your house at 11pm and Harris will be there. He says that he doesn't know if he should tell Aja(Duke and Manah's daughter)that he likes her. Give him good advice and he will like you more. The next night go out at the same time and he will be there. He will say that he told her and that Aja already has a boyfriend.