The mum-of-one, 33, was spotted locking lips with her former husband Wiz at a Grammys bash over the weekend, sparking rumours of a reconciliation.
However, she's now insisted that their relationship is purely platonic and she didn't dump Dancing with the Stars professional Val Chmerkovskiy for the rapper.
Setting the record straight, Amber wrote on Instagram on Monday: "Wiz and I are family and we will be family for the rest of our lives for Sebastian.
"We've been through hell and back so a kiss on the lips for a photo and a fun night out is not a big deal for either of us, we are in a great place but we are very much still divorced and not together.
"And to the Awesome person I got to spend the past five months with (Val) and I broke up due to our own personal reasons but we still care about each other tremendously and love each other's families even more.
"So please understand that we are all human and we have feelings too. Nobody got dumped and nothing over here is malicious it's just how life works sometimes."
Amber - who has three-year-old son Sebastian with Wiz - started dating Val last year after being partnered with his brother Maksim on DWTS.