A sizeable chunk of the male population would have 'stumbled across' porn while surfing online. And many women would react as they would on discovering an affair. So wipe your porn history.

On Internet Explorer, click Internet Options in the Tools menu. On the General tab, under Temporary Internet Files, you have choices. Click Delete Cookies to lose any stored on your computer. Click Delete Files to remove any temporary files stored. (No, your computer won't crash. Trust us.) Under History, click Clear History to get rid of the list of sites you've visited. Click OK to confirm your choices, then carry on in the murky depths of the internet…

If you are a Firefox user, click on Options in the Tools menu. Go to the Privacy tab. Under Private Data, check the box that says 'Always clear my private data when I close Firefox'. There, you're safe now.