Kate Gosselin’s worst nightmare is becoming a reality. Her bodyguard and rumored boyfriend Steve Neild may be forced to divulge all her dirty secrets under oath as part of custody proceedings against her ex-husband, Jon Gosselin.

Sources exclusively tell In Touch that Jon’s lawyers will call on Steve to testify because he “knows everything that goes on behind closed doors in the house” — especially when it comes to the couple’s children, Mady and Cara, 16, and Aaden, Alexis, Collin, Hannah, Joel and Leah, 12.

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Despite Steve’s assumed desire to protect his client and rumored girlfriend, he has no choice but to be honest.

“But he has no choice but to be completely honest about everything,” the source tells In Touch exclusively.

And a source says Jon hopes that includes his suspicions that Kate was physically abusive to Collin.

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“At this point, Jon doesn’t even care about Steve and Kate’s relationship,” the source notes. “He just wants to make sure his kids are safe.”

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