At a previous job, I had a volunteer that would come in and help out on a regular basis. We became best friends. After several months, while out delivering newsletters, a truck stopped and we both started talking to the occupants. After the truck left, we both said at the same time: How do you know them? From me: Well, the lady was my mom's cousin that was married to the man, my dad's cousin. From her: The lady was her mom, the man her step-dad. We are still best friends 10 years later.