From this link:
"Heather’s roommate, who was out of state at the time, says she talked to Heather around 2:00 a.m., after Heather had been dropped off from her date. She says as far as she knows, Heather was safe at home and alone in the apartment.
“She was looking forward to seeing him again,” the roommate said."
Also,
"According to Horry County Police Department Lieutenant Robert Kegler, the man who took Heather on the date is not suspected of involvement in her disappearance.
“He’s been interviewed and is not listed as a suspect or person of interest at this time,” Kegler said."