Creamy Tomato Crawfish Pasta

14 oz. water 2 T. butter 1 (4.6-oz.) box Pasta Roni Garlic and Olive Oil Vermicelli 1 pt. assorted cherry tomatoes, halved 1 stick butter 8 oz. chopped onion 1 (8-oz.) carton fresh pico de gallo 1 lb. fresh crawfish…