The hip-hop mogul has admitted that throughout his relationship with J.Lo he was still in love with Kim Porter, the mother of his eight-year-old son, Christian, and the woman who is now pregnant with his twin daughters.
Diddy, 36, said: "When I was with Jennifer I got caught up. She was fine.
The hype can pull you together, and it's feeling good, and the relationship is genuine. There was love there, but it just wasn't this type of love." The rapper, real name Sean Combs, sings about Lopez - who is now married to Latin star Marc Antony - and Porter on his new album 'Press Play'.
But Diddy insists the mother of his children was his true muse.
He said: "The relationship that gave me the most inspiration was the relationship with Kim. It's my most long-term relationship. It's had a lot of ups and downs, and it made for a lot of great songs." Diddy and Porter dated in the 90s and had son Christian together.
The rap star was in a high profile relationship with Lopez in 2000 but they split within a year and in 2003 he and Porter rekindled their romance.
She is now pregnant with twin girls and Diddy has vowed to make her his wife.
The star also has a 12-year-old son, Justin, from a previous relationship.