There has been a lot of uproar regarding reports of a new relationship for pop singer Ariana Grande which started while both of them were still legally married. Is it just a case of poor timing and difficult relationships coming to a natural close, or is there a sinister pattern of Ariana predating upon men who are already in relationships?
Psychology student, Louisa, looks at the research on why people cheat and how we can see the patterns in celebrity messy relationships.

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