In a statement released last night, they said they did not regret moving to the area from England:
Everyone who met Dylan fell in love with him. His beaming smile would light up any room and his laugh was the sweetest music.
He loved to cuddle, play tag every morning at the bus stop with our neighbours, bounce on the trampoline, play computer games, watch movies, the colour purple, seeing the moon and eating his favourite foods, especially chocolate.
He was learning to read and was so proud when he read us a new book every day. He adored his big brother Jake, his best friend and role model ...
We will always be a family of four, as though Dylan is no longer physically with us, he is forever in our hearts and minds.
We love you Mister D, our special gorgeous angel.
More top news
ITV News political correspondent examines the reaction to Labour's Pledge Stone.
The high-profile couple blamed their schedules and not being able to spend time together on their mutual decision to end their relationship.
Fans, politicians and celebs have joined in May the 4th be with you craze trending on twitter on 'Star Wars Day'.