What are the odds of Aria and Ezra being an item forever on the show Pretty Little Liars?

They are the only reason why I watch the show. It's a love that's hot, mysterious, pure, and pulls you right in. They are both so beautiful, but I heard in the books he moves away and is never heard from after he gets arrested. And then Aria can just fall in love again. With the romance already underway the odds of them being together don't look that good, especially with her being his student. But would they really split them apart no matter their fan base? With the way the show is going right now it looks like they would never part.