In literal terms, a partner is crime is an accomplice who helps you commit a crime. But more figuratively, a partner in crime is that person who is always by your side, especially when you’re indulging in mischief. Or better yet, a partner in crime is the one person who’ll always be by your side though thick or thin, and someone you know who will never, ever, let you down no matter what. Read more A best friend is someone who is there for you and is someone you can trust and blah, blah, blah. Basically, anyone can have a best friend. But what’s rare is having that bond be stronger than just a simple friendship that you can have with multiple people. It’s almost as if they can read your mind. Your best friend is your excuse for everything and will cover up your lie or add on to your story to make it more legitimate. A partner in crime is like a soul mate without any romance involved. This is that one friend who adds color to your life and totally “gets” you.