What does a gal do when her ex boyfriend gets a new girlfriend?! Post thinly veiled messages on Twitter, of course!

In true celebrity style, Demi Lovato has taken to Twitter and posted a cryptic tweet that definitely-maybe seems aimed at her ex Wilmer Valderrama, who was spotted on a date with former flame Minka Kelly, just one day prior.

On Wednesday, August 31, photogs caught the former "That '70s Show" actor and the former "Friday Night Lights" actress on a low-key date to Palms Thai restaurant in Hollywood. Nothin' fancy for these two!

Soon after their date-night photos hit the Internet, the two jetted off to Cabo San Lucas, Mexico to spend some time together. The duo were photographed sunning themselves in Cabo San Lucas on Friday, Sept. 2. It appears as if now that the cat is out of the bag, Wilmer and Minka are ready to be open about their relationship.

Us Weekly reports that the twosome, who once dated back in 2012 after Minka had split with Derek Jeter, began dating about a month ago.

Interestingly enough, on Thursday, September 1, Demi seemed to get some feels out on social media when she posted a pointed tweet, writing, "You have to be capable of being honest with yourself before you can get honest with other people." We wonder who that could be about?! Ouch!

While she didn't directly address Wilmer in her tweet, it's pretty likely that the "Confident" singer got wind of the romance rumblings -- otherwise that passive aggressive jab just seems a little too perfectly timed. Luckily for her, Demi's legion of fans quickly wrote messages of support upon seeing the mysterious post.

Demi and Wilmer pulled the plug on their on-again/off-again, six-year relationship back in June. They broke the news to fans via their Instagram pages by posting a message on June 3 that said, "This was an incredibly difficult decision for both of us, but we have realized more than anything that we are better as best friends …We will always be supportive of one another."

That's all fine and dandy until someone gets a hot new girlfriend!

Despite the telling tweet, the "Cool for the Summer" singer also seems to be making moves to move on -- she's been linked a slew of studs, including MMA star Luke Rockhold, MMA star Guilherme "Bomba" Vasconcelos and reportedly went on a date with Odell Beckham Jr. this past July, at NYC's Hunt & Fish Club restaurant, according to Us.

Maybe she can find comfort right now in Odell's strong arms?