You see, Danny and Rosa spent the last two years speaking but Danny didn't catch the BRIGHT RED FLAGS when he was constantly getting stood up. He also didn't clue on when he found out Rosa had THREE Facebook pages. Despite all of that, he still wanted to have a child with her.
So the professional catfish hunters, Nev and Max, helped Danny and found out that Rosa wasn't even in the same state and that she was actually a man called Jose.