arquette011812_11_X17crop230.jpgDavid Arquette is back on the dating scene!

Courteney Cox's ex has called it quits with his girlfriend of five months, Christina McLarty.

Arquette, 40, Tweeted, "Sadly I'm single again. A long distance relationship proved to be too difficult."

The Scream 4 actor and the Entertainment Tonight reporter began dating in summer 2011.

Arquette separated from his wife Courteney Cox in 2010.

The two are the parents to 7-year-old daughter Coco.