puppy boy
A male who is in love with a female friend who does not return the feeling. Due to the one-sided nature of the infatuation, the male will often do favours for the female in the hopes that if he is nice enough to her, she will "see the light" and learn to love him back. This, of course, never EVER occurs.
When Joe confessed his love to Diane, she smiled sweetly, then asked him to look after her puppy for a week while she went off galavanting with her ex-boyfriend. Joe, a puppy boy, thought he was one step closer to being her man. He was wrong.
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