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.
Q: Sentence1: Ricky was very thin, and he was nervous about his weight. Sentence2: He thought girls would never want to be with a man as thin as he. Sentence3: So he began to lift weights in his garage every night! Sentence4: Then he got a girlfriend, and she told him how she loved his thinness. Sentence5: Ricky retired his weight bench that very next day!
A:
Girlfriend, Girls, Ricky