Best Friends || J.R. & M.B. Fanfic

Geo and Cristal have been friends since they were born. As the years have went past Cristal and Geo have developed feelings for each other but just don't know it. As they discover their feelings Cristal is in a relationship with Mikey, who she has had a crush on for quite awhile.
So will it be Mistal or Ceo?
This is a joint fanfic if that makes sense.