Relationships in Tinseltown tend to go South more often than not, and Jesse James and Kat Von D are no longer together.

The “Monster Garage” guy and the “LA Ink” gal have called off their engagement, though they haven’t exactly said why.

Kat took to her Twitter page last night to share the news- "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."

It’s not exactly a shocker that they split, given that Jesse began dating Kat shortly after news broke that he’d been cheating on his wife Sandra Bullock with a porn star.