Heat a large skillet over medium heat. Add butter to the skillet and let melt.
Dice the pork into bite sized pieces and add to the skillet. Cook, stirring occasionally, for 7 minutes.
Add the onion to the skillet and cook for 3 more minutes, stirring occasionally.
Add the garlic to the skillet and stir to combine.
Dump in the pasta, tomatoes, water, milk, and red pepper flakes. Stir to combine and bring to a boil.
Cover and cook for 8 minutes.
Remove lid and continue cooking for 5 more minutes.
Reduce heat to low and stir in the cheddar. Let cook 2 more minutes.
Remove from heat and garnish with parsley and season with salt and pepper as desired.