Rob Kardashian and Blac Chyna celebrated a romantic Valentine's Day on Sunday.

The 28-year-old reality star and 27-year-old model cozied up for a kiss photo after Blac Chyna posted pictures of the gifts she received from her beau.

Kardashian gave Blac Chyna dozens of red roses and a painting of her face emblazoned with the lyrics to "their" song, "The Beginning" by John Legend. The model showed off the art on Instagram, telling her followers, "Look at this really nice painting my babe got for me."

Kardashian and Blac Chyna have been linked since late January and were reportedly staying together at the model's home. Sources told E! News the couple first met when Blac Chyna was still friends with Kardashian's sister Kim Kardashian.

"[Blac Chyna] makes him feel really good and sexy," an insider said. "[She] was friendly with Rob when she was good friends with the Kardashians. Rob always thought she was pretty hot."

Kardashian, who retreated from the spotlight after a significant weight gain, has been more active on social media since he and Blac Chyna started dating. He was diagnosed with diabetes after an emergency trip to the hospital in December, but is working to improve his health with Blac Chyna's help.

"Everything about him has changed. She's been so good for him," a source told Us Weekly. "He [and mom Kris Jenner] reconnected and had a long talk. I think Kris is so happy he's finally out of his shell, so if it took Blac Chyna to get him here, so be it."

Blac Chyna shares 3-year-old son King with her ex-fiance Tyga, who is presently dating Kardashian's half-sister, Kylie Jenner. The model's best friend, Amber Rose, clashed with the Kardashians last year after criticizing the relationship.