How to get Bernard's all hearts and Roushk's all hearts?
For Bernard's first, second and third hearts, follow the Full Moon storyline. For Bernard's fourth heart watch fireworks with him at the fair.
For Roushk first heart finish Lizards' Treasure storyline without lying to Othra and having 40 likes with Roushk. For Roushk's second heart do the talk "Bonding" with Othra for three times choosing a different place to visit, the fourth time gives you a fourth option that you have to choose.
For more information try to click on my name, than creator page and see my guide (the first link is sufficient), there is the column "hearts" that includes all the option you need to choose to obtain every heart, Bearnard's and Roushk's are among them.
If you have questions let me know!