The 46-year-old music mogul said he watched one episode of the show and got hooked to it, reported Female First.
"I'm a big fan of 'Downton Abbey'. I kind of stumbled on it. I'm interested in history, kings and lords. I watched episode one and got wrapped up in it."
Diddy also said he developed a crush on Lady Sybil, played by actress Jessica Brown Findlay.
"I found out I had a crush on Lady Sybil. I watched it every week to see her pretty eyes and discovered the show was excellent. The writing is incredible and each character is such a great actor."
"When she died it was devastating to me. I was angry and wrote to the creators saying it was uncalled for and stressful. Then when Matthew Crawley died it was straight tears in my house.
"His plight as an outsider coming in, being hit with a fortune and having to figure it out, reminded me of myself. I love the British. But I'm not happy the show is ending. We have to do something about it," he said.
