The 33-year-old television personality and 30-year-old professional dancer flaunted their romance Wednesday on Instagram following a date night in New York.
"NYC nights," Rose captioned the picture for her 13.5 million followers.
The Amber Rose Show host and Chmerkovskiy looked equally enamored Monday at Madison Square Garden. The couple delighted fans by smooching for the kiss cam during a New York Knicks and Atlanta Hawks game.
"They were really cute," a source told Entertainment Tonight of the sweet moment. "They look like they have a lot of fun together!"
Rose and Chmerkovskiy were first linked in October after meeting on the ABC reality competition Dancing with the Stars. The television personality confirmed their relationship Jan. 4 on her Loveline podcast.
"It's amazing!" she gushed. "It's so good. It's been four months now and it's awesome. I love his family and everyone's so great and he's great."
"Right now it's just absolutely amazing and I'm super, super happy," the star added. "I didn't want to put it out there [initially] because I wasn't sure about us yet."
Rose was partnered on Dancing with the Stars with Chmerkovskiy's brother, Maksim Chmerkovskiy. Maksim welcomed his first child, son Shai, with Peta Murgatroyd this month, and celebrated his 37th birthday Tuesday.