DAN STEINBERG / Invision/AP 1 / 24
DAN STEINBERG / Invision/AP 1 / 24

Gym Class Heroes star Travie McCoy has opened up about his 2009 split from Katy Perry, revealing that her romance-ending email sent him spiraling into a depression he's still coming to terms with.

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McCoy admits he was madly in love with the pop star and even gave her a promise ring after vowing to spend the rest of his life with the singer, but his drug issues and the couple's separate career successes brought the two-year love affair crashing to a halt.

Opening his heart in a new "Behind the Music" TV special, which aired on Sunday, McCoy recalled the start of the romance with great fondness, noting, "We looked really cute together. We get (sic) along better than any other girl I've ever hung out with in my life. That was the beginning of a really, really awesome time for me. ... When I was around her I felt really at ease and comfortable with myself. ... It was the most amazing thing ever."

But McCoy's surreptitious drug use caused friction with his Christian girlfriend.

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He said, "She wasn't stupid. ... She knew when I was f---ed up. ... I chose drugs over our relationship. ... As things started taking off for her, the more I started to doubt my role in her life. There were times I felt like a stepping ladder."

And he's still hurt about the way she ended the romance: by email.

McCoy added, "It started off with 'I love you so much I hate to do this.' ... Someone that you are ready to spend the rest of your life with sends you a f---ing email just s---ting on your whole parade. It destroyed me."

Perry went on to romance and marry Russell Brand, but that relationship ended at the end of 2011. She has since been linked to Florence + the Machine rocker Robert Ackroyd and, most recently, John Mayer.

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