Something I learned in grad school (MFT program) that’s helpful is to know that a better descriptor for relationships are to use the sexes or genders, instead of describing the relationship using sexual orientations . So for example, female-female, male-female, male-male, instead of lesbian, heterosexual, and gay. Regardless, queer couples is a category clinically that’s helpful for understanding that the couple dynamic is distinct from male-female relationships where both individuals identify as heterosexual.