According to The Ashley, the couple had a few friends over for a small party when a fight escalated.
A source claimed that the argument turned explosive and law enforcement was called to the scene.
No one was arrested or removed from the home and the fight never got physical.
However, after coming to blows, Lauren reportedly unfollowed her hubby-to-be on Instagram and deleted a few photos of him from her account.
“They fight constantly, but this one was really bad,” a source told The Ashley.
The insider added, “Something major went down.”
Watch what Javi told us about his relationship with Lauren back in February!