Things seem to be heating up between Justin Timberlake and Olivia Wilde. Timberlake headed to Hell’s Kitchen’s Southern Hospitality on Friday night to celebrate his friend Eytan Sugarman‘s birthday. “Tron” beauty Wilde arrived shortly after to meet him and stayed by his side all night. Both newly single, the pair have been seen together repeatedly, but Timberlake’s rep denied a relationship. “Justin has starred in two movies with Ms. Wilde . . . they are friends and are not romantically involved, nor is Mr. Timberlake romantically involved with anyone.”