In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.

Sentence1: Abbey was dating a guy named Justin. Sentence2: The two were together for a few years. Sentence3: Abbey found Justin doing disgusting things on the computer. Sentence4: She decided to break up with him over it. Sentence5: Abbey is glad she dumped him and never looked back.
Justin, Abbey