Steps
1. Cook the chocolate-infused pasta in boiling salted water until al dente.
2. In a separate pan, sauté the shrimp until cooked through and lightly browned.
3. Add the ketchup to the pan with the shrimp and cook for an additional minute.
4. Drain the cooked pasta and add it to the pan with the shrimp and ketchup sauce. Toss well to combine.
5. Season with salt and pepper to taste.
6. Serve the chocolate shrimp pasta hot, accompanied by a side of fresh watermelon cubes.