Husband.
/One day in my college French class, we were asked to write about how we pictured our lives in ten years. One of the things I wrote was that I hoped to have a husband or wife. I was just starting to come out as bisexual at that time, and I was really proud of myself for boldly including this detail.
When I got the assignment back, the teacher crossed out "wife" and wrote that I only needed to write "husband." While I was confident writing "husband or wife" I still didn't feel comfortable confronting my teacher about this, and I let it affect my grade.
This teacher would also go around the room asking girls to describe in French what qualities they liked in boys and vice versa, with the assumption that everyone was straight.
Although I believe that there was no ill will on the teacher's part, her oblivious heteronormativity contributed to my discomfort at a time when I was struggling to come to terms with my sexuality. Looking back, I wish I had said something at the time, and I hope she's more aware now.