Selena Gomez's Las Vegas nightclub outing with Orlando Bloom may have led her ex-boyfriend, Justin Bieber, to some odd behavior.

While reports claim nothing romantic happened between Gomez and Bloom, and Bloom remains in a relationship with Katy Perry, Bieber may have gotten his face tattoo in response to the news.

“Justin went ballistic when he found out about Selena and Orlando,” In Touch Weekly reported, according to a report by Hollywood Life on Wednesday. “[His] pals are concerned that his behavior may spiral out of control.”

In addition to tattooing a small cross at the corner of his eye, Bieber was recently seen passed out in front of a Canadian Parliament building and feeding squirrels while barefoot.

Although there was never any solid evidence claiming Gomez and Bloom hooked up during his visit to Las Vegas, Bieber is reportedly convinced that something went down between them and has been acting out because of it. 

“He is convinced that they hooked up again in Vegas,” an insider told Hollywood Life. “He hates Orlando and never got over their fight. Now, Justin thinks Orlando is taking advantage of Selena and it frustrates him.”

Years ago, after Bieber was linked to Bloom's ex-wife, Miranda Kerr, he and Bloom were involved in a verbal dispute in Ibiza which nearly turned physical when Bloom allegedly took a swing at the singer.

As for how Gomez has reacted to news of Bieber's latest tattoo, a source claims she is not a fan.

“Selena is not happy about Justin’s new face tattoo,” a source close to the singer told Hollywood Life last week. She hates “the placement of the ink” and wants him to have it removed.

“Selena feels like this is another example of Justin acting impulsively, which is part of the reason why their relationship has been so rocky over the years. She wishes he could just control his impulses and things would be much easier for both of them,” the source added.

Tags: Selena Gomez Justin Bieber Orlando Bloom