Made in Chelsea stars Andy Jordan and Louise Thompson dropped an explosive revelation on Monday night's episode, with Thompson confessing to a one-night tryst with her mystery man, according to Yahoo! The lucky mystery man? It's One Direction crooner Niall Horan, says aggrieved lover Andy Jordan.

Following the big reveal Monday, Jordan opened up about the issue in an interview with Now Magazine, disclosing that Thompson's mystery man is in fact 1D hottie, Horan. Jordan said, "This is the first time I've spoken to anyone about Louise and Niall, It's embarrassing. I'm having my life ripped up on camera 
and I can't take any more public humiliation."

Jordan reportedly learned about the shattering truth from co-star Spencer Matthews, who claimed Thompson confided to him about Niall when both were drunk. Jordan confronted Thompson, who denied everything at first but later broke down and confessed to the deed.

"I pushed her on it and said: 'Why are you lying to me? I heard you've been sleeping with Niall.' She just denied it. She admitted she'd gone to his for a house party, but swore nothing had happened. Then after about half an hour she broke down and confessed she'd slept with him," he told Now Magazine.

This big reveal makes the 1D singer appear to be a sneaky girlfriend-stealer, as Jordan claims that Horan knew Thompson was spoken for but wooed the brunette anyway. Niall reportedly sent his car for Louise, and the two spent the night together.

The "Live While We're Young" singer had been interested in Thompson since the BAFTA awards. Jordan said the singer had been sending messages to his ex-girlfriend. He added, ''Either way, I'm pretty annoyed with Niall. He sends a car to take my girlfriend back to his place? What am I supposed to do? I wonder how many girls he sends that car to....I'd love to ask Niall exactly what happened and why he did it. I feel that he's snaked his way into my girlfriend's life," reports Yahoo!

Louise Thompson, on the other hand, says Andy Jordan is "deluded" about the whole thing, according to Entertainment Wise. She took to Twitter to slam her ex-beau, saying that, "Wow getting a lot of google alerts. Looks like Andy simply sees dollar signs and tries to sell a story about something he is deluded about."

Meanwhile, Jordan appears to have started moving on from the whole issue, as he gamely posed, in nothing but a towel, for a sexy feature in Now Magazine. (Take a peek here).

Niall Horan has yet to issue a statement about the accusation.