By JACKIE WILLIS

November 19, 2012

What a difference a week makes. Just one weekend ago reports surfaced that Justin Bieber and Selena Gomez had split, but on Sunday night, the two showed up together for an American Music Awards after party.

Though Gomez, 20, wasn't seen on the AMAs red carpet, she and Bieber, 18, were spotted at the Marriot Downtown Hotel in Los Angeles, Calif., thus having us all wondering if the two are an item again.

Funny lady Jenny McCarthy, 40, even tweeted about the Baby singer's on-again, off-again relationship after joking about being a cougar for Bieber while on stage at the AMAs. "My cub @justinbeiber brought his acceptable and beautifully aged beauty Selena to the AMA after party. Guess I'm back on the prowl. Rww!" she wrote.

Do you think Bieber and Gomez will last, or is this the beginning of the end?