Kris Humphries' ex-girlfriend Myla Sinanaj threatened to release sordid details about their relationship, according to a voicemail posted on TMZ.
Sources say after Myla and Kris' relationship was exposed, he broke off all contact with her and she was PISSED, calling him 17 times. No response.
Irate, she began dialing up his friends too and threatening to "expose" Kris.
That's when Myla apparently left a message, demanding that Kris stop stonewalling her and return her calls, allegedly threatening to one friend:
"If he's going to play me like that, I have way more sh!t I can put out."
The voicemail does not show Myla Sinanaj plotting or committing extortion against Kris, as he has claimed ... but he has turned it over to the FBI.
Alleged extortion aside, Kris apparently wants to muzzle Myla because his tryst with her will hurt his divorce case against Kim Kardashian somehow.
Myla's attorney has demanded he apologize and retract the extortion statement ASAP or he will be receiving a nice defamation lawsuit.
Tacopina says Myla was indeed angry when she read that Kris was calling her a "booty call" and that she has proof of a "substantial relationship."
One that involves Myla meeting Kris' parents, helping his sister Kaela shop for furniture, spending many evenings together at home cooking, and so on.
After the voicemail leaked online, Myla Sinanaj apparently posted a flurry of bitter tweets to the NBA star hammering him for that too.
This situation? Real normal.