love letter

British  

noun

1. a letter or note written by someone to his or her sweetheart or lover

2. (in Malaysia) a type of biscuit, made from eggs and rice flour and rolled into a cylinder

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Example Sentences

BTS – as with many other K-pop acts – are fan-focused, and this is possibly why “Swim” gets chosen in the end as the lead single as a love letter to the fans.

From Salon

For all I know, you are in the possession of love letters to me.

From Salon

Of course, beyond the movie's fandom, this universal tale about self-acceptance comes in the form of a love letter to K-pop.

From BBC

But it is also “partly a love letter” to a city whose wartime years haven’t received the scrutiny they deserve.

From The Wall Street Journal

Far from home, Alarnab said his word-of-mouth success had grown into a "love letter from Syria to the world" that needs no translation.

From Barron's