Jennifer Garner is ''furious'' with Jennifer Lopez.

The '13 Going On 30' star - who announced her divorce from Ben Affleck last week - is reportedly fuming with the 'On The Floor' hitmaker, who previously dated Ben.

A source told RadarOnline.com: ''Jen is furious at J-Lo. Jen is certain she's is the one who keeps coming out and saying stuff about her divorce from Ben.

''Jen thinks J-Lo is passive aggressive because Jen is the one who got Ben after their relationship ended. Jen feels J-Lo is punishing her for that ... She's asked Ben to make it stop. Ben insists he's not in contact with his old girlfriend, but Jen doesn't believe it.''

Meanwhile, friends of the couple - who have three children, Violet, nine, Seraphina, six, and Samuel, three, together - have claimed the 45-year-old singer and actress is to blame for Garner's split from Ben.

A source said: ''Everyone is talking about J-Lo and Ben and saying it's inevitable they will get together again at some point. We call them the Richard Burton and Liz Taylor of Hollywood. They were pretty flirty at the Oscars and have stayed in touch over email. Jennifer Garner never liked it.

''Jen's fed up with him flying off to Vegas for gambling sessions and going on other solo trips, leaving her holding the family together. Their household is pretty much alcohol free so he would disappear when he wanted to indulge.''