Kris Humphries sn't burned ALL of his Kardashian bridges -- it seems he still has a friend in Khloe.. who insists her sister's estranged husband is a "good guy."

Khloe was leaving La Scala in Beverly Hills yesterday when we asked how she felt about Kris' extortion case with his ex-girlfriend Myla Sinanaj. 

Khloe -- who seemed pretty concerned about Humphries -- replied, "Well, that shouldn't happen to anyone ... Kris is a good guy."

We asked Khloe if she thought Kris and Myla really had a boyfriend/girlfriend relationship ... Khloe shot back, "I don't know who [Kris is] f**king, it's just not my sister, that's all I know."

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From TMZ.com