1. Bring a large pot of salted water to a boil. Add the spaghetti and cook according to package directions until al dente.
a. If pasta finishes before shrimp, Reserve 1-2 cups of pasta water, then Drain and set aside.
2. While pasta is cooking, heat olive oil in a large skillet over medium-high heat. Add garlic and cook for 30 seconds, or until fragrant.
3. Add shrimp, season with salt and pepper, and cook for 2-3 minutes per side, or until pink and cooked through.
4. Toss cooked pasta with shrimp in the skillet.
5. Stir in pesto until well combined.
6. Divide pasta among plates and serve immediately.
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