A new report ranks Fremont among the most unfaithful in the country.
MORE: Report reveals Fremont topped list for happiest city in America
That's according to Ashley Madison, a Canada-based dating website for people looking to have affairs.
It says Fremont is number five in the country for cheating.
Last year, Wallethub declared Fremont the "happiest city" in America.
Other California cities that made the top 20 cheating hotlist include Sacramento and Anaheim.