Chris Brown didn't spend his Valentine's Day with Rihanna, but he didn't let it damper his night.

The R&B bad boy, driving his bright orange Lamborghini, hit up a mini-mart in West Hollywood with his boys.

When asked about why he was spending the night without RiRi, Chris answered with "Hold on listen, listen" ... then he revs his big engine.

Meanwhile, Rihanna was seen leaving Blok Nightclub in Hollywood wearing a dress that matched the color of Chris' Lambo. But too bad these two lovebirds couldn't be together on such a romantic night.

Could Chris and RiRi's love affair be over?