After Hembrow's ex-fiance Reece Hawkin confirmed he was dating model London Goheen, his new flame decided to take aim at the Instagram star.
Posting a selfie, Goheen captioned the snap with Avril Lavigne lyrics: "Hey, hey, you, you, I don't like your girlfriend."
Following the controversial post, Hembrow showed fans what her main focus is - her kids.
Wearing a white bikini, the single mum posted a selfie with her two-year-old daughter Saskia, writing: "I want to spend each moment of the day with you."
Hawkins and Hembrow broke up in June, after four years together. The pair share two kids: Saskia, two, and Wolf, one.
Tammy spoke of her split in a YouTube video, "One or two months ago, I decided to end things with Reece. He didn't cheat on me, I didn't cheat on him. It wasn't like that at all."
"I don't want people to think we just gave up. Most people know relationships are very complex."
But she's since changed her tune - sending out cryptic messages to fan through Instagram.
Last week, she said in a now-deleted post: "Break-ups hurt, but losing someone who doesn't respect and appreciate you is actually a gain, not a loss...," with a drawn-on love heart.
She followed the message with an Instagram story, saying, "Man if people knew the TRUTH about some people. Biting my tongue so hard it's gonna bleed when I'm done."