A 36-year-old Westminster reporter, Serena Cowdy, is allegedly at the centre of a love triangle between two members of the British Parliament.
The marriages of top politicians Stewart Hosie and Angus MacNeil are on the rocks after they are said to have both had affairs with the same journalist.
Mr Hosie, 53, the deputy party leader, said on Sunday he was separating from his wife Shona Robison, 45, who is also a party member.
And it is reported both men have clashed over their involvement with the blonde writer, though sources say this is not true.
It is believed Hosie is currently in a relationship with Miss Cowdy.
As a journalist at Westminster, Miss Cowdy is a keen observer of political gossip, intrigue and in-fighting.
But now she is at the centre of her very own bust-up after having affairs with two married MPs from the same party, it was reported on Monday.
Mr MacNeil, 45, announced his separation from his wife Jane last year, not long after the end of his affair with Miss Cowdy, a former actress who is now a freelance political journalist.
Mrs MacNeil had stayed with her husband after a previous incident when he was caught with two teenage girls in a hotel room in 2007 while she was in the hospital.
Miss Cowdy is said to have told friends that she saw SNP MPs as romantic revolutionaries, describing them as ‘the “Mujahideen of British politicians”.
A source said: “This love triangle is a disgrace for Scottish politics and gives weight to the rumours that some of the sudden mass of SNP MPs in London have been going on a big jolly.
“These two have behaved with all the decorum of a coach party in a Carry On film arriving at a pub.
“It’s laughable that Serena boasts of her affairs with these MPs and says they’re like a sexy Mujahideen.
“I doubt their wives think they are.”
Miss Cowdy has made no comment on the claims.
Father of three MacNeil, who previously worked as a BBC Scotland reporter and a teacher, represents Scotland’s Western Isles.
He rose to prominence in the Commons in 2006 by lodging a complaint with police over ‘cash for peerages’ allegations made against Labour.
There has been no comment from the trio until an announcement about Hosie’s separation from Miss Robison was issued to a Dundee-based paper on Sunday.
Miss Cowdy is said to have had an affair with MacNeil during the independence referendum campaign.