Jake Gyllenhaal and girlfriend Alyssa Miller have split after six months of dating. One source tells Us,
"They fizzled out. It happened a while ago -- before the holidays. He's back on the scene."
"Things were really good between Jake and Alyssa right up until he had to leave for L.A. to go shoot a movie [Nightcrawler]
in the fall. Then the distance just really got to them."