The phrase "a shared affection for" is correct and usable in written English.
It can be used to describe a mutual feeling of love or fondness for something among a group of people.
Example: "The community has a shared affection for the local park, often organizing events to maintain its beauty."
Alternatives: "a mutual love for" or "a common fondness for".
I gather you and he bonded over a shared affection for Yorkshire terriers?
(Apart from a shared affection for Germany and an ability to converse in German, that is).
There seemed to be physical and emotional attraction, as well as a shared affection for the author James Agee.
She has sent out hundreds of invitations, sprinkled with references to an early romantic getaway at the Pierre hotel and a shared affection for the Jersey Shore.
They said they discovered a shared affection for "The Critic," the 1990s animated series, and exchanged e-mail messages discussing their general likes, dislikes and their strong affection for a good romantic comedy.
The only obvious thing binding George and Lola is their shared affection for Los Angeles, a city that George, an aspiring architect, praises as "pure poetry".
Tom (Gordon-Levitt), a greeting-card writer and frustrated architect, falls head over heels for office mate Summer (Deschanel), whose slightly off-kilter loveliness is terminally enhanced by their shared affection for the Smiths and their ability to turn IKEA into a fun house.
What these companies have in common, beyond their shared affection for sweeping, barely possible goals, is that they all continue to be led by their founders.
The two later bonded, he said, over their desire to seal the country's borders from mass immigration — and their shared affection for cats.
One of the things that they have in common is their shared affection for the works of Ayn Rand, the libertarian heroine who celebrated laissez-faire capitalism.
Cemented by the bond of creative arts and shared affection for Ms. Flöge's niece — Gertrude Flöge, known as Trudie — Gustav Klimt and Emilie Flöge became lifelong companions (although reportedly not lovers) and spent their summers together at the Attersee.
