Bring a large salted pot of water to boil over high heat. Once boiling cook long noodles as per package instructions, removing ¼ cup of pasta water with 1 minute left in the cooking time. Drain and set aside.
Meanwhile, heat a medium skillet over medium-high heat. Once hot, add olive oil, garlic, and tomatoes. Season with salt, pepper, and chilli flakes (if using). Add pasta water and bring to a strong simmer to combine flavours.
Toss tomatoes and sauce with pasta. Serve immediately.
Serve with finely grated Parmesan cheese if desired.