heterosexual life partner
Two persons of the same gender who are best friends and commit to spend their lives together, yet never engage in any type of homosexual relations with one another.
Some famous examples of heterosexual life partners: Jay and Silent Bob, Beavis and Butthead, Adam Carolla and Jimmy Kimmel, Cheech and Chong, Beto and Raul, Pace and Baier.
heterosexual life partner
The heterosexual best friend of a person who identifies as homosexual (Gay or Lesbian).
"Is that your boyfriend?"
"No, he's my heterosexual life partner."
or:
"Is that your girlfriend?"
"No, she's my heterosexual life partner."
"No, he's my heterosexual life partner."
or:
"Is that your girlfriend?"
"No, she's my heterosexual life partner."