updated 06/15/2011 AT 7:00 AM ET
•originally published 06/15/2011 AT 7:35 AM ET
These stories are “absolutely not true,” Harris’s manager Michael Blakey tells PEOPLE. “This is pure fabrication. There is no relationship, nor has there ever been one. This is a stupid rumor.”
Rumors of a romantic connection between the two first surfaced in March, when Harris and McGraw were reportedly spotted looking cozy at L.A. hotspot Chateau Marmont.