I just started rewatching the series from the beginning on Netflix, and wow, the creeper is strong with Ezra. There was always somewhat of an "ick" factor from the get go, but knowing what I know now... I want to look away any time he's onscreen with Aria. There's a part in S1E02 where he walks into the theatre after Aria and her mother, and there's something about the lighting/his clothes/his facial expression that screams "sexual predator," or "sad, desperate shell of a man."
I was super stoked about Ezra being A, since, for the first time in the series, he would have been a compelling character, but of course TPTB Toby'ed it and now he's all "i did it bcuz i luv u." Sigh.