The former star of The Hills admitted that while lovemaking in front of the cameras is "kind of lewd" for the Channel 5 show, he has "considered" selling a sex tape in the past.
"I don't think they're paying us enough [to have sex]," he told OK. "We've debated and we think it's kind of lewd for the house.
"We've been offered so much to make a porno film, if we're going to do it on camera we should get millions.
"We were offered a couple of million. I considered it. Heidi was like, 'Errr, no!'"
Heidi and Spencer in bed in the house
Earlier this week, Heidi was reduced to tears after discovering that the group's first shopping task would put Spencer "mouth-to-mouth" with glamour model Lacey Banghard.
The couple are nominated alongside Paula Hamilton and Frankie Dettori for tonight's (January 9) first Celebrity Big Brother eviction, which takes place from 9pm on Channel 5.