Chris Brown has expressed his regret over losing the “love of his life” with Rihanna, and has warned Justin Bieber not to make the same mistake by letting go off Selena Gomez, Hollywood Life reported. Over the weekend, Bieber gave rise to speculation that he was missing his former girlfriend as he posted an intimate photo of him kissing Gomez.

“If Justin doesn’t know that Selena’s his number one belieber, he’s an idiot,” a source close to Brown told Hollywood Life. “Chris refuses to think that his little bro is that stupid. Selena has been holding him down for years. She’s been the one whose never judged him. Who’s never betrayed him. She’s never left when times got tough.”

According to the source, Brown knows the feeling of losing someone, and believes that Gomez “always loved Justin, just like Rihanna always loved Chris.”

“But just like Chris was when he was younger, Justin’s now insecure and making stupid decisions. He’s playing with Selena’s heart and emotions. He’s hurting the one woman who would walk through hell and back to please him,” the source reportedly added.

Bieber’s throwback photo Sunday from the time he was dating Gomez, sparked rumors that the two may soon reignite their romance. Hollywood reported that the “Same old Love” singer, who had earlier said that she was “done” talking about him, liked the picture.

“Biebs still has a chance — a real chance to be happy and in love with a woman who loves him to death and has a pure heart,” another source told Hollywood Life. “Chris told Justin that the universe doesn’t make women like Selena and Rihanna often. He told Justin he’d batter latch onto this woman and hold her down, otherwise, he’ll regret it for the rest of his life, just like Chris regrets losing RiRi.”

Brown has reportedly expressed his concern over Bieber following his footsteps when it comes to being “arrogant, womanizing, breaking hearts.”

Rihanna and Brown had a tumultuous relationship after an altercation in 2009 with his then-girlfriend that turned ugly when the 26-year-old physically abused the “Diamonds” singer. The two resumed dating in 2013, before splitting up again several months later.

After his split from Rihanna, Brown started dating Karrueche Tran, with whom his relationship ended after news surfaced the “Take You Down” singer had fathered a child with model Nia Guzman.