Cook the pasta according to the package directions. Drain the pasta water and place cooked pasta in a large bowl. Add milk and stir until pasta is well-coated. Set aside.

Using a large fry pan, cook the bacon over medium-high heat until crispy. Transfer cooked bacon to paper towels and pat dry. Crumble the bacon and add to the bowl with the pasta.

Add the tomatoes, garlic, basil, and green onions to the bowl and stir until well combined.

Add the mayonnaise and sour cream to the bowl; gently stir until well combined.

Finally, add the Romaine lettuce and toss until well combined. (Tip: Wait and add the chopped Romaine right before you serve this salad. Otherwise, the lettuce will begin to wilt.)

Season with salt and pepper to taste.