The Sun had 発言しました they interviewed Rob and he confirmed they were dating. However, Gossip Cop had 発言しました that interview was false. Rob had never talked to the Sun.
So. No. They have not openly confirmed their relationship.
actually, Rob did speak to the Sun, they just twisted his words. The Sun reporter asked: is this a public appearence together? and he replied: yes we are together. The Sun made an assumption. This is not to say they arent together- they may be, but he hasn'e officially "revealed" they are a couple (unless that was his VERY subtle way of telling us ;) )
I'm not sure either, i just wished the two of them would tell us, a clear yes または no. The stories and the gossip doesn't really help, i think the press should leave them alone, until they are ready to finally tell us!
BUT ROBERT DESERVES SOMEBODY BETTTTTTTER!!!!! Kristen is so ugly, the worst at acting, and extremely shy (which isnt bad unless Robert wants to go do something)