Why, you ask? Because she claims he stole her Tiffany necklace!
It all started when Jenelle posted a cryptic tweet "So numb. Feel like throwing up." She quickly followed up with, "Thanks to @gary_head for stealing my $300 Tiffany necklace... What marine does that ?!"
When Jenelle confronted Gary about his foray into petty theft, he texted her, "It will Probably look better on Hannah anyways for you taking her clothes. She would love it."
Uh oh, is Gary sleeping with Jenelle's archnemesis, Hannah Inman? Say it ain't so!
But wait, it gets worse. Gary allegedly broke down Jenelle's door and stole the gun she gave him for his birthday (yep, they're armed).
"what about my door frame?" Jenelle tweeted. "My $300? The gun?"
Reading between the lines of Jenelle's emotional tweets, it sounds like she flew into a jealous rage after Gary posted on Chelsea Houska's Twitter feed.
She even tweeted " if u never went and cheated on me and getting yr dick sucked in a parking lot then I would trust u more."
At this point, we feel just terrible for poor Jenelley. Hasn't she been through enough? Oh, and here's a brief PSA for Gary: If you give a gal a ring, she gets to keep it even if you break up.