Tyga and Arianny were at Universal Studios Saturday night for Halloween Horror Nights. Witnesses tell us they were showing major PDA -- he wrapped his arms around her waist and she was holding onto him walking through the mazes.
We're told they're hanging out but are not exclusive. Maybe he needs a refresher on Arianny's vacay mode pics ... to lock down this relationship.
Perfect way to get over your ex getting knocked up, we're guessing.