"That's the rumour. We collaborated at Staples Center. She came out and sang Jenny From the Block with me which was so much fun. We haven't spoken further about collaborating but I did read that on the Internet... She has my number, we text, but we haven't texted about going into the studio." Taylor Swift insists she isn't plotting a collaboration with Jennifer Lopez following their onstage duet at the Staples Center in Los Angeles recently.