Heterosexual.
Heated.
heterozygous
A heterosexual person.
Fan fiction based on celebrities or fictional characters involved in an opposite-sex romantic and/or sexual relationship.
heterozygote
Between two people of the same sex; gay.
Sexually and/or romantically attracted to members of the same sex, such as a man who is attracted to men or a woman who is attracted to women; gay. (Typically used in the sense of sole/exclusive attraction.)
A person who is sexually attracted solely or primarily to others of the same sex.