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1.
That wonderful time at the beginning of a relationship where the fights are far away in the distance and the sex is seemingly never ending. The time before you could possibly accept anything negative points about your significant other.

Typically lasts no more than 6 months max.
Man 1: "Why did you break up with your Girlfriend?"
Man 2: "The Honeypoon period ended and it all went downhill."
by BigNath January 04, 2010