Some of these are one-way attractions, for example Wealth likes Popularity but Popularity is neutral towards wealth. This has no effect I know of so I report the averaged values the game uses.

A few conclusions can be drawn from this:

• Everyone loves their own aspiration; Cheese sims are obsessed with other Cheese sims.
• Other strong attractions will be seen with Family-Knowledge or Romance-Pleasure.
• The worst combinations are Family-Romance, Wealth-Cheese, Popularity-Cheese, or Pleasure-Knowledge.
• Romance is one of the worst aspirations for generating chemistry while the best are Family and Pleasure

These values apply only to primary aspiration. Secondary aspirations have no effect on chemistry.