Taylor and Selena: Still Friends, Nothing madami 

It doesnt look like they are just friends.
They were spotted together having dinner dates, so I doubt that they are just friends.
And Taylor was again spotted going to the movie set where Selena was filming a movie.

^^Well, they have said they are just friends.. and yeah they are alittle touchy touchy for just friends, but if that's what they say, then until they admit they are in a relationship... we have to take their word for it