I do lots of 2-pagers. To save them being separated in the gallery I use the double page for the thumbnail, then upload the singles to a photohosting site like photobucket or tinypic, and insert the IMG code into the details box.
Like this:
https://www.sweetshoppecommunity.com...-bread&cat=500
and this:
https://www.sweetshoppecommunity.com...lights&cat=500