Kris Humphries can really pick ‘em. First it was Kim Kardashian, who ended up taking a dim view of the phrase “til death do us part.” On the rebound (get it? he plays basketball), Humphries took up with a certain Myla Sinanaj. She turned out to be a pretty piece of work as well, if reports are true. Humphries has sicced the FBI on her, according to TMZ. He's alleging that Sinanaj tried to extort him. Seems that she has a number of emails, texts and assorted other documents that form a kind of history of their hook-up. She's (again, allegedly) threatening to go public with them – and “ruin” him, sources say -- unless Humphries forks over the dough. Humphries isn't even divorced from Kardashian yet. Sheesh.