A person who, unlike Bisexual, can only have sexual relations with one sex, but can love either sex. Short for "flexible" or "flexamourous".
Guy 1: Hey, did you hear about Daniel and Samantha getting together?
Guy 2: No way! But I thought Daniel was gay?
Guy 3: He's a gay flex, not gay.
Guy 2: No way! But I thought Daniel was gay?
Guy 3: He's a gay flex, not gay.
by Person12743 September 6, 2016
 Get the Flexmug.
Get the Flexmug. by jonny tsunami757 June 25, 2008
 Get the flexmug.
Get the flexmug. by tha land December 14, 2008
 Get the flexingmug.
Get the flexingmug. by sleezbreeze September 12, 2011
 Get the Flexmug.
Get the Flexmug. by kaanybaby February 28, 2009
 Get the Flexedmug.
Get the Flexedmug. by textbook January 17, 2005
 Get the flexmug.
Get the flexmug. 