Partner in crime

[Britney]

good friends who get in trouble together or get each other in trouble and laugh about it.

[Rihanna]

your significant other; someone you can depend on to help you get shit done! Your Boo

[Vania]

Someone who knows you better than yourself. Someone who you usually get into trouble with. Someone who has your back no matter what. Someone who can tell your secrets and everything to. Someone who loves you even with all your flaws. Someone who wont change who you are. Sometimes your [partner in crime] can also [be someone] who youre in relationship with, or a person you have feelings for, or [just a friend].