Normally I'd be jumping at this, but it's a massive pile of meh.
The Mirror is tweeting it as: 'House of Lords leader and Tory Cabinet Minister Lord Strathclyde cheated on wife with single mum'
I really couldn't care less, although I am interested in why the Mirror chose to headline the fact that the woman is a single mum. They're playing to the same dog-whistle reactionary crap as the Tories do. In tabloid and Tory speak, 'single mum' = benefit scrounger in the same way that 'asylum seeker' = illegal immigrant and worse.
I'm ashamed to say it but I expected better from a supposedly left-leaning newspaper.