heteroflexible
(ˌhɛtərəʊˈflɛksɪbəl) adj (Sociology) (of a person) predominantly heterosexual but not exclusively so
n (Sociology) such a person
[C20: from hetero(sexual) + flexible]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014