Kim Kardashian's estranged husband Kris Humphries had no idea the socialite wanted to end their marriage, confessing her divorce decision has left him "devastated".

The reality TV star filed for divorce in Los Angeles Superior Court on Monday (31Oct11), just 72 days after exchanging vows with basketball player Humphries in a lavish California ceremony in August (11).

Kardashian is citing "irreconcilable differences" for the split, but it appears Humphries was completely unaware of his wife's plans and he's determined to fix their marital problems.

In his own statement issued on Monday, he says, "I'm committed to this marriage and everything this covenant represents. I love my wife and am devastated to learn she filed for divorce... I'm willing to do whatever it takes to make it work."

Meanwhile, Kim's sister Khloe Kardashian has blasted critics, insisting the rude comments directed at her sibling are "hurtful" and "disgusting".

Twitter.com bloggers have taken aim at the socialite for choosing to end her union to Humphries rather than work on her marriage.

Defending her sister, Khloe tweets, "Reading some (of) these comments r (sic) so hurtful. Im grateful 4 our fans who understand & r being respectful (sic). Hate is disgusting. Love is everything. Thank God for family. We are strong and we will only become closer!"