India, March 26 -- George Clooney is reportedly grappling with huge "concerns about his marriage" to Amal Clooney as he dedicates himself to his Broadway debut.

The "insecure" Hollywood icon, who is currently starring in a theatrical adaptation of his 2005 Oscar-nominated film Good Night and Good Luck, is said to be struggling with the growing distance between him and his wife.

"He's been concerned about his marriage and wondering if doing this play was a good move. He was a bit red-faced that he couldn't last even a month without her, but now he's more worried about how this might impact his marriage in the long run," an insider told Radar Online.

The couple's separation due to their demanding careers has reportedly left George feelin...