Jersey Shore’s Ronnie Ortiz-Magro & Baby Momma Jen Harley Call It Quits — & Get In An EXPLOSIVE Fight On Instagram Live!

The schism between reality and reality TV can sometimes leave fans a bit behind…

While we’re watching Ronnie Ortiz-Magro decide whether or not to cheat on Jersey Shore Family Vacation, his relationship with baby momma Jen Harley has already moved to the next stage.

And by that, we mean DEFCON 1.

Photos: Ronnie And Jen Traded Insults On Social Media!

According to a source spilling to Us Weekly, while Jen “saw how bad the cheating was while watching the show Thursday night” she had already gotten wind of bad behavior:

“Ronnie told her something was going down on the show, but not specifics or how bad it was – and it was bad.”

And here’s the kicker — she was ready to dump him BEFORE seeing it! The source reveals:

[Image via Instagram/MTV.]