Add the shrimp to a heated skillet with olive oil and shallow fry for 1 to 2 minutes. Turn and continue to fry shrimp for 1 minute or until the color changes to pink or orange. Do not overcrowd.
Pour in a bit of pasta water and add the al dente spaghetti. Gently toss until shrimp and pasta are warm, for about 1 minute. Sprinkle Parmesan cheese. Give another gentle toss.