GRILLNATION Creamy Cheddar Cheese Sauce For Lobster Tails

I love lobster tails and our family tries to have them twice a month. We do all kinds of different ingredient combos and they all are great. But one that steals the show is my Creamy Cheddar Cheese Sauce! I first butterfly my tails and then apply salt, black pepper & garlic powder. I give them a nice grill and then top with the cheese sauce. It’s very simple and quite pleasing! 
Ingredients (Creamy Cheddar Cheese Sauce):
1/4 stick butter
2 teaspoon flour
1 cup whole milk
1 salt, pepper, paprika (tablespoon each)
8 ounces shredded cheddar cheese