For last night, Celebrity Big Brother viewers witnessed the Blue singer get down and dirty with Jasmine Waltz… mere moments after embarking on a romance with Casey Batchelor.
Hidden away during the housemates' UFO task, Lee spent the night with Jas in a spaceship stationed in the garden; alongside Luisa Zissman, Jim Davidson, and Liz Jones.
As the lights dimmed for the evening and the quintet began to drift off, Jasmine invited Lee beneath the sheets with her. Or rather, foil camping blanket. Sexy stuff.
Redefining the term 'rampant', 30-year-old Lee shot up like a rocket from his sleeping pitch, scooted around Liz inconveniently lying between them, then hopped in beside the US wild child.
After some fumbling in front of the cameras, and the usual grunts to make you wince, the eager beavers leapt up and snuck off to the toilet like naughty teenagers.
Comedian (albeit a debatable title) Jim could then be heard saying he needed to use the loo, with former Apprentice contestant Luisa warning him the horny couple could be a while.
The X-rated pair follow in the footsteps of BB5's Stuart and Michelle, BB3's Jade and PJ, and BB6's Anthony and Makosi – who all got up to no good in the fishbowl series.
Lee had initially struck up a romance with glamour model Casey following launch night last Friday, when the pair were shackled together in the first CBB twist.
In his defence, he did state from day one that he fancied Jas. However, he appeared to have quashed those feelings, kissing Casey and turning to mush as he gushed about how he liked her.
Casey and Lee have now called it quits on their whirlwind three-day relationship; but not without a few tears from the busty 34GGs Brit beauty after feeling used by the boyband crooner.
Yet if the on/off couple are voted off in tonight's eviction twist to the secret Bolt Hole, they'll be forced to spend the next 48 hours together in solitude.
Will bed-hopping Lee stay true to his word and stay celibate? Or get back under the sheets with Casey? If the latter, let's hope Casey tells him where to stick it.