Ok here's the solution for anyone else that might run into this problem, I have found this on the VM forum.
add the following in your .htaccess right under mod_rewrite
###### Added by Forrest to insure AJAX cart works by force of www
#
RewriteCond %{HTTP_HOST} !^www\.
RewriteCond %{HTTPS} =on
RewriteRule .* https://www.%{SERVER_NAME}%{REQUEST_URI} [R=301,L]
RewriteCond %{HTTP_HOST} !^www\.
RewriteCond %{HTTPS} !=on
RewriteRule .* http://www.%{SERVER_NAME}%{REQUEST_URI} [R=301,L]
#
########## End - Addition by Forrest
