Such A Good Guy by Kate Raven

Every Jane Austen loving psychopath needs a fixation, and she’s his. . .
Introverted crystal shop owner Luna Gallagher’s troubled older brother Adrian is finally getting his life back together when he dies unexpectedly touring Canada with his best friend, TikTok pop star sensation Luke O’Neill. Luna heads over to help plan the funeral, but Luke’s sweet golden retriever personality grates on her. When Luke tells the uninterested Luna that he always had a crush on her, she rejects him firmly.
But when Luna starts uncovering some of Luke’s secrets, she finds out he’ll do anything she says . . .
Except stop