What percentage of murders are triggered by infidelity?

Answer 1

The answer is in "A Review of Sex Differences in Sexual Jealousy, Including Self-Report Data, Psychophysiological Responses, Interpersonal Violence, and Morbid Jealousy" Christine R. Harris, 2003

Answer 2

There is no specific percentage of murders triggered by infidelity as motivations for murder can vary greatly among cases. Infidelity can be a factor in some murders, but it is not the sole or primary cause in the majority of cases. Other factors such as mental illness, revenge, financial motives, or domestic violence are often more prevalent in murder cases.