I actually want to say they are, since he was with her on halloween, and went to Bali with her. And we have them together at the Memorial Day party.
Actually let me reword that. They were together. Marcelo was an idiot, they broke up, Ale was all upset for a while (the VS Swim unveiling she looks like she's going to cry ) He did something to make up for being an idiot, and they got back together.