The phrase "affectionate interest" is correct and usable in written English.
It can be used to describe a warm or caring curiosity or concern about someone or something.
Example: "Her affectionate interest in the well-being of her friends made her a beloved figure in the community."
Alternatives: "caring curiosity" or "warm concern".
She brings to this self-consciously Kafkaesque conceit an affectionate interest in quotidian thoughts and speech.
As families do, they cope, thanks to Roxana's devoted energy and strength, Yezad's grudging acceptance of the situation, and the affectionate interest of the two boys.
He was apparently also asked to try and obtain pictures of the baby, which he did, emailing Tinglan under the guise of affectionate interest.
The director's use of the architecture and machinery of a newspaper headquarters — the kind where the presses and the offices occupy the same space; the kind very few of us work in anymore — demonstrates his affectionate interest in old technologies.
The Lincolns had a mutual affectionate interest in the doings and welfare of their boys, were fond of one another's company, and missed each other when apart, as existing letters show.
Stevenson came in as I was finishing it, and with his affectionate interest in everything I was doing, leaned over my shoulder, and was soon elaborating the map and naming it … "Oh, for a story about it," I exclaimed, in a heaven of enchantment, and somehow conscious of his own enthusiasm in the idea".
Temple, who has short-cropped, hennaed hair and sports a leather wrist-band, takes an affectionate but proprietary interest in Williams' affairs.
The evidence isn't entirely there yet, but Wolf's argument that heavy porn use seems to follow an addictive pattern, desensitising users to images of violence and causing them to lose interest in affectionate sex with a partner whose name they know, seems increasingly plausible.
Hume has in mind promises made "at arm's length" that parties undertake to promote their own interest, not affectionate exchanges of favors between friends.
The best proof of his wide interests and affectionate nature lies in his voluminous correspondence: about 8,000 letters remain.
Although Twain has compassion for the affectionate Jim, he has an interest in burlesque; although he is sensitive to Jim's heartbreaking losses, he is always looking for comedy and repeatedly holds Jim up as a figure of howling fun, ridicule that is specific to his condition as a black man.
