Miss Sweetcakes was one of those ladies who knew what she wanted out of life.
When she found that McLintock had been two-timing her, she dropped him like last
week's mashed potatoes. She was more interested in Professor Aristotle Mongoose.
Among Mongoose's admirable qualities were a dapper mustache, a scintillating
wit, and a love of chocolate tidbits. Miss Sweetcakes and Professor Mongoose
never ran out of topics for conversation. They could always discuss their
passions for chocolate and and for each other. Mongoose was always singing
love's old sweet songs to her. His idea of a great date involved a triple
chocolate delight at Maude's House of Chocolate. His ideas and hers were the
same on lots of things. In everyone's eyes, Professor Mongoose and Miss
Sweetcakes were soul mates.
Businesses like Maude's House of Chocolate sometimes elect not to use an
apostrophe in their name.
The other words ending in s in the paragraph are either names (like Sweetcakes) or plurals (like " qualities" and " ideas"). It would be incorrect to put an apostrophe with a plural that is nor possessive.