During the first episode of "Austin and Ally", Ross and Laura already had lots of chemistry.
At the end of season 2, there was a very magical moment in the austin and ally life, there was a first kiss, after "Ally" lost her stage fright.
In season 4, if you remember the ballroom dance class, "Ally" asked "Austin" to dance, and you might have saw a lot more Ross than "Austin", but Laura is better at hiding herself
Out of Austin and Ally,
Anytime that Ross, Laura, Calum and Rani sit in Ross' car, Laura and Ross always sit together. Although Laura may have a boyfriend, I still believe that Raura could, in future times, be real!