1999 September 2, JA Chapman, “Re: NEW: Acts of Kindness G,B rated G 1 of 1”, in alt.startrek.creative.erotica.moderated[1] (Usenet):
Not only that but the most[sic] sexiest fic I ever read was a hetsmut Seven/Paris someone did for The Small Screen.
2002 June 26, Atalanta Pendragonne [username], “Re: OT Anne Rice newsgroup”, in alt.support.childfree[2] (Usenet):
I think most slash is better than most hetsmut, but that's just me.
2003 November 14, Farfalla [username], “Re: NEW2U TOS "Blue-eyed Satyrs" Mc/Saa [NC-17] Trek hetsmut”, in alt.startrek.creative.erotica.moderated[3] (Usenet):
I love McCoy hetsmut but sometimes I have trouble finding pairings to latch onto.
2006, Kirby Crow, quoted in Eden Lackner, Barbara Lynn Lucas, & Robin Anne Reid, "Cunning Linguists: The Bisexual Erotics of Words/Silence/Flesh", in Fan Fiction and Fan Communities in the Age of the Internet: New Essays (eds. Karen Hellekson & Kristina Busse), McFarland & Company (2006), →ISBN, page 203:
You're making me want to see hetsmut between these two. Damn you!