Dave,
What, like there being evidence that Theresa May said there would not be an election until 2020?

She changed her mind.
That does not make her a liar.
If she claimed something did not happen when really it did, she would have to resign for lying.

Steve,
The referendum was an entirely Tory idea, foisted on us by Cameron because he was scared shitless of UKIP nicking Tory seats

No. Labour and the Lib Dems also promised an in/out referendum.

just reminded of a certain president and his "I did not have sex with that woman..."

What happened when he was revealed to be a liar?

Re. piggate, no-one claims to have witnessed it, there is no evidence for it at all, and he did not even belong to that society.
It never happened.
Likewise the paedophile parties, or will you provide evidence to the authorities so that charges can be brought?
They never happened.
You resort to making up shit.

I have made nothing up. I just quote what senior Labour people have said.