Speaking to the New York Post's PopWrap on Tuesday, Spencer says he "barely" has sex with Heidi to prevent her from becoming pregnant.
"I'm not even kidding, my wife – OK, I'm gonna get crass here – but we're barely having sex because I'm scared that she's gonna have a baby," he says.
"That's the level our marriage is on right now. I'm not even kidding – my wife has me debating cutting off my nuts."
Heidi is already on birth control, but he's scared she's going to skip her pills on purpose in order to get pregnant. "She's not the kind of person who would lie – she would just walk away and not answer the question," he says. "So yes, I'm very concerned. Our sex life has dramatically changed recently."
Honestly we'd rather not have little Spencer's running free in the world, so we're all for his self imposed sex ban.