Private investigator says people cheating on their partners always show one 'disturbing behaviour'

Although girls group chats give them a good run for their money, private detectives are still the first port of call for a lot of people who suspect their other half might be playing away.

These investigators know all the signs of infidelity and can keep tabs on your partner 24/7, so it's a pretty fool proof way of getting to the bottom of your suspicions.

But despite all the underwear they've found in glove boxes and the piles of discarded receipts for fancy gifts they've discovered, there is one particular red flag which they reckon always crops up when someone is cheating.

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Former soldier Jack Charman used to gather intelligence on enemy forces, but he now uses his extraordinary skills to scrutinise the activity of unfaithful spouses.

He is the founder and managing director of the London-based firm, National Private Investigators, who help clients rumble their other half's secret rendezvous which are going on behind their back.

A typical day in the office for Charman consists of surveilling suspected cheaters in the UK and catching a few red handed before reporting back to their partners.

But there is a certain 'disturbing behaviour' which he reckons most love rats display when they're leading a double life and the private investigator has warned Brits to keep an eye out for it.

In an interview with Stylist, Charman opened up about the 'main takeaway' from the countless cases he has handled which often indicates that the alleged cheater does have a bit on the side.

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First things first, Charman said that 'trusting your intuition' is everything, adding: "I often rely on mine doing this job, and it rarely lets me down."

He continued: "We’ve all been in situations where something feels ‘off’, and by the time I’m involved, the client usually knows something is going on; they just want the proof."

"Someone who is cheating will gaslight their partner to try to make them doubt themselves - this is something I see all the time," Charman explained.

"It’s disturbing behaviour. It’s so important to recognise the signs of gaslighting and to know when it’s happening to you."

If you don't know what the term means, gaslighting is a process where one person in a relationship controls and manipulates the other by distorting their sense of reality and their memories, according to Private Detectives Birmingham.

"They will convince the victim that they are 'imagining things', 'remembering events incorrectly' or even 'crazy'," they added. "More often this takes place in romantic relationships."

So if your partner is putting you down, making you question your perception of things and saying that your fears are just stemming from jealousy, it might be time to pack a bag and hightail it out of there.