Sequel needed?

Just got the first proof copy of 'Beneath the Perfect World' back from The Copy Press. I'm really pleased. So the book is good to go!! It's been one hell of a journey and a lot of hard graft, so it's very satisfying to finally hold a printed copy in my hand. You get to this stage and you learn there's more to producing a novel than just writing. Since completing the book in April, my days have been taken up with phone calls to editors, graphic designers and PR consultants. After a two year relationship with the characters in the book, to the point that I dreamt about them, it was sad to say farewell to them. I was pleased when my editor told me another scene needed adding, and I needed to write a little bit more into one of the chapters, because I could reconnect with my characters again. I can see the appeal of writing a sequel, especially if you grow fond of the people you write about.