Dispatch revealed that they knew for a long time that Song Hye Kyo and Song Joong Ki were dating and even considered marriage. An entertainment insider revealed to Dispatch, "These two are really serious (and they're considering marriage)."
Although Dispatch knew about the dating and even captured them together on dates, they decided not to publish the news. They stated that if it was regular dating, they can just prove it with photos but marriage news is different. Dispatch needed concrete proof and for marriage and all the things that go with it, they had to be extra careful.
You can check out some of the Dispatch photos below and view the full set here.