The Black and Yellow hitmaker and Ora were photographed leaving The Nice Guy in West Hollywood on Monday (17Aug15) and heading to the W Hotel.
A source tells Eonline.com, "They looked very engaged and like they were an item."
Another source adds, "Wiz and Rita went to the W hotel in Westwood and came in for drinks at (restaurant) STK. They were all over each other, couldn't keep their hands off one another."
The singer and Khalifa were also spotted getting close backstage at the Teen Choice Awards on Sunday (16Aug15) and they were photographed embracing at the show.
Ora ended her relationship with Ricky Hilfiger last month (Jul15) after a year of dating, while Khalifa split from his model wife Amber Rose last year (14).