Add water and a generous squeeze of green food coloring to a large pot. Bring to a boil, then cook the spaghetti according to package directions.
While pasta cooks, brown the ground beef in a separate pan, seasoning if needed and drain any excess grease. Stir in spaghetti sauce until heat through.
Drain the green spaghetti, then serve it on a plate and topped with meat sauce and finish with a tiny red candy heart.