The actor and singer have reportedly been feuding for years over Bloom's estranged wife, Miranda Kerr.
The ongoing rift came to a head when Bieber walked up to Bloom at an Ibiza restaurant. Watch the video!
There are mixed accounts as to what was said. Daily Mail claims Justin was cordial, while TMZ’s insiders say Justin asked Orlando, “What up, bitch?”
Bloom took a swing, but Justin ducked. The Biebs' security team pulled them apart.
Shortly after the incident, Justin posted a picture of Miranda on Instagram, but quickly deleted it. He later posted another of that appeared to be Orlando Bloom crying.
The feud began after Miranda, 30, and Justin, 19, reportedly spent hours cuddling and flirting at a showbiz party in New York in 2012.