Katy Perry is gushing about her relationship with John Mayer again, revealing that they had a “long courtship” before they went public with their romance.

The Prism singer, 29, revealed the song “Legendary Lovers” off of the new album is about her relationship with Mayer, 36.

Some of the song’s lyrics include "I never knew I could see something so clearly looking through my third eye/ Never knew karma could be so rewarding and bring me to your life/ Maybe this is the beginning of something so magical tonight.”

In an interview with Entertainment Weekly, she explained "I actually wrote it in an email one time, and after I wrote it I looked — we had a long courtship before anything was (public), just writing letters to each other — and seeing 'legendary lovers,' it sounded so nice.”

The couple, who are back on again after splitting a few times, went public with their romance in the summer of 2012.

This isn’t the first time she’s talked about “courtship,” as she told Elle magazine in August that she’s "a woman who likes to be courted – strongly."

image: EW