Well this is petty!

Halsey announced yesterday that she and boyfriend G-Eazy had broken up, and almost immediately she posted an Instagram rubbing the split in the rapper's face.

"kiss my dog on the forehead and then kiss ur ass goodbye ✅," she captioned a bikini photo of herself and her pooch. That's a clear shot at the Bay Area heartthrob!

Not only that, but she wiped her account clean of any snapshots of the two of them together, making it seem as if parting ways wasn't exactly amicable.

“I normally keep this kind of thing private but provided our public nature I feel the need to inform my fans. G-Eazy and I are taking some time apart. I’m eager to continue the upcoming passage of time dedicating myself to my art and my career, and the duration of my tour. I wish him the best. Thanks for respecting our privacy at this time," she wrote in a note on her page confirming the speculation.

Nobody knows what really happened, but apparently at Post Malone's show at the Hollywood Bowl last week, the singer and the hip hop star had visible tension, and she ended up attending the after party with rumored old fling Machine Gun Kelly!

"Machine Gun Kelly has always been into Halsey but was not looking for a committed relationship which is why she moved on with G Eazy. G-Eazy is well aware of Machine Gun Kelly and Halsey's history," a source dished to E! News.

"Friends doubt Machine Gun Kelly will want to be in a relationship any time soon, but they wouldn't be surprised if he and Halsey start spending a lot more time together," the source added.

We have a feeling they will be back together before the weekend is over!

kiss my dog on the forehead and then kiss ur ass goodbye ✅

A post shared by halsey (@iamhalsey) on