The pair, who raise three children together, have spent little time together recently due to the growing success of Affleck's latest flick "Argo", reported Showbiz spy.
"Ben really wants to win an Oscar for this film, and he's become pretty obsessive about it. With Ben on the road promoting his movie, he and Jen are spending a lot of nights apart. They're at a breaking point right now.
"While Jen is trying to be supportive, friends say they aren't sure how much longer she'll be able
