The way to keep your accounts from co-mingling is to use a feature on Chrome called People. In the settings page you can add people aka profiles to Chrome. Each profile opens up a separate Chrome browser with individual settings, background, email accounts, social accounts, favorites, etc. I have currently my account as a male with family, friends, and coworkers on it and a separate account for my female self with my preferred first name and a different last name that opens up in a different page and is on some groups but has no friends. I log in from the same PC and am able to keep everything separate. In fact, I've been doing this for over a year without having either account ask to be added to the other's friends. This method keeps everything separate and hidden from each other. It's actually a nice feature if you have multiple members of your family using the same PC but wanting to keep their own stuff separate from each other.