Kaitlyn Bristowe
Kaitlyn BristoweFacebook/The Bachelorette

Fitness instructor Shawn Booth, believed to be the winner of season 11 of dating reality show "The Bachelorette" featuring Kaitlyn Bristowe, has sparked cheating rumours after he was reportedly spotted getting cosy with a mystery woman.

Booth, whose season 11 win was confirmed via a Snapchat photo leak that showed him in bed with Bristowe, was seen getting flirty with a mystery woman while roaming around Nashville. The 28-year-old is even believed to have exchanged numbers with the mystery blonde woman, photographers at the scene said, reported Just Jared.

Booth is yet to react to these alleged cheating rumours and his decision to remain mum could be to avoid revealing what happens in the season finale of "The Bachelorette."

In the meantime, the upcoming episodes of "The Bachelorette" are going to get intense, as recent reports indicate that Bristowe will be confronted for allegedly sleeping with one of the contestants, believed to be Booth.

Although Bristowe said in an interview that she doesn't regret sleeping with the contestant, she admitted the relationship progressed too fast.

"I don't think it was a mistake, the decision I made," Bristowe told E!Online. "I think the timing probably wasn't the best, just because, I mean, there are other relationships developing, but just the timing wasn't the best."

She continued: "What is a relationship without the physical part? To feel chemistry with somebody has a lot to do with being physical. I don't know why that's such a shock to people! I'm like, 'After how many seasons of The Bachelor and Bachelorette are people going to realize that people are going to make out?' It's a thing."

Interestingly, recent reports also claim that Bristowe slept with more than one contestant on the show. Nick Viall was reportedly brought on the show to distract Bristowe, who was allegedly getting too close to Booth.

"Producers freaked out when they saw how close Kaitlyn was growing to one of the men — it was no contest — so they brought Nick on the show [during week 4] to keep things interesting," a source told In Touch, according to Radar Online.

"The Bachelorette" airs Mondays on ABC.