"According to the <i>National Enquirer</i>, Alex Rodriguez is furious about the close friendship between his girlfriend Cameron Diaz and her ex, Justin Timberlake. The mag says A-Rod is ""insanely jealous"" and ""insecure"" over the closeness between his girlfriend and Timberlake, who star together in ""Bad Teacher."" Rodriguez has even had serious ""temper tantrums"" because of the co-stars' bond. For how tense things have gotten, see what a Rodriguez buddy exclusively shares with <a href=""http://www.gossipcop.com/alex-rodriguez-jealous-justin-timberlake-cameron-diaz/"" target=""new"">Gossip Cop</a>. Tiffany Rose/<a href=""http://www.gettyimages.com/"" target=""new"">GettyImages.com</a> - February 5, 2011"
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