Singer Aaron Carter has split from fiancee Melanie Martin, a week after the birth of their son, Prince Lyric, alleging she "betrayed" him by communicating with his estranged twin sister, Angel Carter.

The Crazy Little Party Girl hitmaker and his partner welcomed the newborn last week and on Tuesday, Aaron claimed Melanie is trying to take their son to Las Vegas, explaining he is currently sleeping in his car.

"Due to personal reason Melanie Martin and I have decided to go our separate ways. There has been a very big lie and my sister communicating w (with) my ex fiancé ruined everything considering she knew what angel tried to do to me in court thanks angel you ruined my family. God bless (sic)," he wrote in the first of a series of angry tweets.

In November, 2019, Backstreet Boys star Nick Carter, was granted a one-year restraining order against his younger bother. Aaron was also ordered to stay from his twin sister, Angel, after she accused him of threatening behavior.

"I have the most conniving deceiving family and Melanie has been lying to me the whole time communicating with my twin sister and the family members who tried to put me in prison and who tried to get a conservatorship on me in court. I'm in shocked this is horrible," he added on Twitter.

"I've never felt more devastated and betrayed and lied to in my entire life this is such a horrible situation considering prince doesn't deserve any of this and now it's my job to just be a single father and that's what's gonna happen."

Aaron also alleges Melanie is moving with their tot.

"She told me she's moving to Vegas and I'll never see my kid again," he shared.

After one Twitter user suggested he had kicked the new mom out of his house a week after giving birth, Aaron responded, "Don't worry you trolls won you ruined my life alongside w Angel my twin (my sister-in-law) Lauren Kitt and nick god bless. I'm a good man. I'm sleeping in my car ok.. and (the baby) is in the house."

He also said his siblings have "tried to depict me as a crazy psychotic human being and a pedophile".

"Thanks angel for ruining m my life you guys succeeded took everything from me… Xoxo a congratulations is in order they've succeeded with their mission thus far (sic)," he penned.

It's a big change from the happy couple's mood when their son made his entrance into the world via an emergency Caesarean section.

Alongside a photo of Prince, the new dad wrote on Instagram, "Prince is precious I love you son. Your mommy loves you as I drop tears

on the phone. This is me cutting his umbilical cord my precious family #TheCarters@missmelaniemartin I'm so proud of you hunny you did it I Love you with all my heart my beautiful blessings from god (sic)".