I got the playful bean by just telling jokes and stuff until the plantsim became playful. The sad one was harder for me so I invited the plantsim into the gardening club I just happened to be out with at the time, and then I purchased the sad group atmosphere in the group perks menu to make him sad. Maybe you could try something like that. To get the uncomfortable bean my vampire sim used the deprive needs interaction to deprive the plantsims hygiene motive. Unfortunately after my sim finally got the forbidden fruit and ate it nothing happened. I guess vampire sims can't become plant sims lol