My eyes go wide as I spot the dark red smudge of lipstick on the corner of his mouth. Keller must see the same thing as he turns his head to wink with a knowing grin before turning to Luca and wipes his mouth with his thumb. Luckily, Maria is too busy glaring at me to notice. Luca smirks at me and rubs his thumb along his lips and Keller covers his mouth, holding back a laugh.
