The Charlie's Angels actress confirmed that she was dating the American baseball player earlier this month. The two were first rumoured to be seeing each other in April.
However, a source told celebrity blogger Perez Hilton that the couple has split, according to WENN.
"They've broken up… [Cameron is] hurt and betrayed, because she tried so hard to please him… She went overboard," said the source.
Diaz and Rodriguez previously dated for seven months in 2010, before breaking up last November.
The 35-year-old baseball player has dated an assortment of famous women including Kate Hudson and Madonna.
Diaz can be seen next in the movie Bad Teacher opposite ex-boyfriend Justin Timberlake.
