PJ denies he performed any sex act with Jade.
He says his "willy hasn't seen any action in seven weeks".
He told a disbelieving Davina McCall that he was just pretending to simulate sex.
He said all he did was kiss Jade and that was at far as it went. He added that he was embarrassed about kissing Jade now.
PJ was then made to squirm as Davina showed him just how deeply Jade's feeling were for him.
Asked if he had any regrets, he said: "Doing that, I've not got many regrets in life but doing that."
He also admitted that after his drunken night in bed with Jade he had tried to ignore her as much as possible and had found her quite annoying.
"At times she can be a really nice girl," he said, "but at times she can be really annoying."
PJ predicted that Jade and Tim would be up for eviction next week, and said he thought Adele, last week's evictee, was the most two-faced housemate.
When asked how he would like to be remembered from the Big Brother experience, he said "as horny".