This is odd, I just tested it with all the bikinis, and it worked, whether helping Luke or not, an option "Jada and Billy's home" should show up.
I'm assuming it's bugged. I realised i didn't get options to help the other boys during the gameplay. There would be a yellow text where i could help them, but no option on the map to go to their house (like the first time i played the game)
