Does growing up have to mean growing apart?

Since childhood, Bryon and Mark have been as close as brothers. Now things are changing. Bryon's growing up, spending a lot of time with girls, and thinking seriously about who he wants to be. Mark still just lives for the thrill of the moment. The two are growing apart - until Bryon makes a shocking discovery about Mark. Then Bryon faces a terrible decision - one that will change both of their lives forever.