Hefner, 87, and his new 27-year-old wife have allegedly come to blows over their outlooks on life, reported Showbiz spy.
"Hugh is boring Crystal with his hermitlike behavior. Hefner is in his PJs all day and never wants to go out," a source said.
The couple's nightly routine consists of dinner at 6 pm, followed by watching TV in bed.
"For special treats, Hefner will play Dominos or put on Crystal's favorite movie, 'The Little Mermaid', but he's usually asleep before it's over," added the source.
The couple got married on December 31, 2012.