Jesse James & Kat Von D End Relationship Over Another Woman?

Jesse James and Kat Von D's split may not have been amicable—or mutual. The once happy couple announced that they had decided to end their engagement on Monday. Reportedly, another woman may have been the root of their relationship strife!

Jesse and Kat reportedly had a heated argument about another woman outside of her L.A. home Monday afternoon, according to Radar Online.

OK! VIDEO: WATCH KAT VON D SURPRISE JESSE JAMES BY GETTING A TATTOO OF HIS GAVE BEFORE SPLIT!

“They were outside and I could hear them fighting. Kat kept throwing some woman’s name out and arguing about how she didn’t like him living so far away,” an eyewitness told Radar. “Jesse finally said, ‘Fine, f*** you!’ and sped away on his motorcycle. Kat sat in her Bentley with her head on the steering wheel for about three minutes before finally driving away.”

Kat was the first to announce the couple's split, writing on Twitter: “I am no longer w Jesse, and out of respect for him, his family and myself, thats all the info I’d like to share. Thanks for respecting that.”

After a whirlwind romance, the couple was engaged in January. It was Jesse's first relationship since his split with Sandra Bullock.