Beneath A Scarlet Sky by Mark Sullivan
From Amazon:
Pino Lella wants nothing to do with the war or the Nazis. He’s a normal Italian teenager—obsessed with music, food, and girls—but his days of innocence are numbered. When his family home in Milan is destroyed by Allied bombs, Pino joins an underground railroad helping Jews escape over the Alps, and falls for Anna, a beautiful widow six years his senior.
