News had been percolating on a couple of Japan news sites, but Ami posted up a blog via 
MySpace conforming that Yumi had, in fact, tied the knot.  Her husband was a long time friend of Yumi's and they began seriously dating last fall.  Looks like it was a very low key marriage as they 
registered for marriage on New Years Eve and do not have plans, at this time, for a wedding ceremony. 
A wonderful end to 2009 and a wonderful start to 2010.  All the best for Yumi and her husband!
(h/t to Anthony for pointing out the good news!)