Private investigator reveals one sentence that 'proves partner is cheating'

A private investigator has claimed that there is one sentence that can indicate someone is being unfaithful, warning partners to "look out" for the telltale signs of cheating.

Many people believe they have cracked the tell-tale signs that their partner is cheating, but private investigator Ali Marsh says that listening out for one particular clue could show for sure if someone is seeing someone else.

Marsh, who has worked in the role for over 10 years, has closely studied how partners can detect whether their other halves are being disloyal.

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In a recent chat with the Daily Telegraph, she highlighted emotional and social shifts as possible signs of cheating within a relationship. However, she noted that there is also a more subtle sign that many might not be aware of.

Speaking specifically about when a partner might have feelings for a colleague, she explained that the way they talk about them at home may change significantly: "If they have fallen for someone at work, they may mention them often."

She added that they will try to avoid doing one thing when bringing the person up in conversation: "They want to talk about them but they can't, so they say, 'So and so did this today.'"

According to World Population Review, the UK currently ranks as the 10th highest country in the world for cheating, with a reported 36 per cent of residents having been unfaithful according to 2022 data.

A YouGov poll shows that 33 per cent of Brits have thought about having an affair, while 20 per cent admitted to having previously cheated. Among those who have had affairs, over 40 per cent of men admitted that their infidelity was with a work colleague, compared with just over 30 per cent of women.

Meanwhile, Everyday Health has advised people to take a number of steps if they suspect their partner might be cheating.

The first recommendation was to "enlist the help of a therapist," noting that it is worthwhile seeking professional support even if you only suspect infidelity. The fact that you have doubts and suspicions is a "red flag" that may require the input of a third party.

Additionally, they suggested that it is important to reach out to people you know and trust, such as family and friends.