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1.
A "Boy-guy" is typically a term used by females to describe a male that they are interested in, or have a "thing" with.

NOTE: a "Boy-guy" IS NOT THE SAME THING AS A BOYFRIEND.
female #1: "So hows your Boy-guy Savannah???"

female #2: " Oh! he's amazing!"

female #1: "I have a new Boy-guy!!!"
by RElliotR December 24, 2010
 
2.
Term defining an individual who persistantly mentions a former hangout buddy. Used as a implicit term refering to homosexuality.
(While at a club drinking with friends).... 'I LUV U BOYGUY!'
or "Man I'm drunk as Fuck, I can score... or I'll call my BoyGuy'
by Javo, J', Baro May 09, 2003
 
3.
Used by individuals still in the closet regarding thier homosexuality as a term of endeerment to a longtime friend.
Your My BOY GUY! I luv you BOY-GUY!
by Baro, J\', Javo May 07, 2003