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"Jealous much?\r\nMarc Anthony is up in arms that his ex Jennifer Lopez has moved on since their July split with a much younger man. A source tells the new Us Weekly, on stands Friday, that 43-year-old Anthony is &amp;quot;going nuts&amp;quot; over Lopez&amp;apos;s relationship with dancer beau Casper Smart, 24.\r\n\r\n&amp;quot;He has fits and tantrums and is very stressed... [He&amp;apos;s] lost a lot of weight,&amp;quot; a source adds. (A rep for the Latin crooner counters this, telling Us Anthony has &amp;quot;been the same weight most of his life.)\r\n\r\nBut pals of Lopez, 42, aren&amp;apos;t crazy about Smart either. &amp;quot;They don&amp;apos;t feel Casper is good enough for her,&amp;quot; a source tells Us. &amp;quot;They are worried because she really puts her heart out there for love.&amp;quot;\r\n\r\nFor more on Anthony&amp;apos;s jealousy and Lopez&amp;apos;s fast track romance with Smart, check out the new Us Weekly, on stands Friday."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.usmagazine.com/celebrity-news/news/marc-anthony-throws-tantrum-over-jennifer-lopezs-new-beau-20111412>