Romancing Mister Bridgerton (Bridgerton Series #4) (TV Tie-in)

Penelope Featherington has secretly adored her best friend's brother for... well, it feels like forever. After half a lifetime of watching Colin Bridgerton from afar, she thinks she knows everything about him, until she stumbles across his deepest secret and fears she doesn't know him at all. Colin Bridgerton is tired of being thought of as nothing but an empty-headed charmer, tired of the notorious gossip columnist Lady Whistledown, who can't seem to publish an edition without mentioning him.