Loyal to your spouse? If you are, you're unlike your neighbors in Pacific Heights, the Financial District, and the Marina District.
That's where you can find most of the 68,980 San Francisco residents registered at AshleyMadison.com, a Web site that hooks up married people with extra sexual partners, according to SF Weekly.
The Web site -- in a move that might have struck fear into the hearts of some of its discrete-minded users -- revealed the top 10 neighborhoods in San Francisco where its swinging-minded users live.
It appears that the wealthier you are, the more money you have to lavish "diamonds on every hottie who isn't their spouse," the newspaper reported.
Following the top 3 in infidelity were Noe Valley, the Sunset, the Mission, South of Market, Nob Hill, North Beach, and the Lower Haight.
46.3 percent of the women registered with the site are married, which means that the other over-than-one-half are women looking to have an affair with a married man, the newspaper observed.
Plenty of people in the tech industry use the site, the newspaper reported, many of the women are seeking a sugar daddy, and most of the women using the site live in Pacific Heights.
Ready your diamond necklace. Just not the one you gave for your anniversary.