's take on ex-lover J.Lo
proves there's no bad blood between the initialed ones — and hints that a musical collaboration may be forthcoming. "That's my home girl — we're friends," the hip-hopper tells tonight's Access Hollywood
. "We just used to go out back in the day; it's that simple. You know, we're going to always work together, we're going to always be cool. She called me and congratulated me on being number one."