Strain the liquid from the mussels and reserve.
Take the mussels from the shells and discard the shells.
In a deep pot, heat the oil, add the parsley and garlic, and cook for 3 minutes.
Stir in the tomatoes, the strained mussel liquid, salt and pepper.
Simmer, uncovered, for 15 minutes.
Add the mussels and cook for 5 minutes.
Mix in pasta.
Serve with romano or parmesan.