HaBO: Maple Syrup & Baseball

This HaBO is from Jesi, who wants to track down a paperback they read:
The book was a random paperback but it was amazing and I re-read it so many times.
This is what I remember:
– Heroine’s name is Hazel and she is American. At the start of the book she’s on holiday in Europe where she meets…
– The hero, whose name is Marcus. He’s rich and handsome (of course) and I think is Italian.
– I remember something about maple syrup and baseball.
– Hazel goes home to America and she has a brother but I can’t remember anything about her parents.
– It’s a slow burn maybe because of the class difference as Hazel is poor and Marcus is rich.
There’s something familiar about this because it’s tickling the back of my brain.