Are Aaron Kwon and Lynn Hung Getting Married?

I just read from Asianfanatics that the two might tie the knot any time soon (source).  They are six years apart, with Aaron Kwok being the senior.  So if they're really in a relationship, they should tie the knot ASAP especially with Lynn Hung's dad suffering from cancer and cancer is not a joke.  I feel the two are just in denial to avoid paparazzi.