A very dear reader recently asked me, "Would you be willing to be in a heterosexual relationship?" I'm pretty sure I just mumbled something inaudible, because I wasn't sure how to answer the question. Of course, I only realized why I couldn't answer the question until after the conversation was long over. This was why the question seemed impossible to answer: The only non-mixed relationship I could ever be in is an asexual one. If I dated a straight guy, it would be a heterosexual-asexual relationship, not a heterosexual one. Straight people don't absorb our orientations into theirs.
The issue of passing also presents itself here. If I was dating a bisexual man, we'd be an asexual-bisexual couple. However, we would be pass as a straight couple to almost everyone. Even people that know me well and know I'm ace would still probably view us as a straight couple.
The original question seems like a simple one, since most people are in relationships where the partners are the same orientation, usually straight. Only bisexuals, asexuals, and those who date them seem to encounter the "mixed relationship" situation. What seems to be a hard sell, even (or even especially) among asexual people, is that asexuality doesn't come with any attatched behaviors. If you're asexual, you'll always be in a half-asexual relationship, no matter who you're with or what you do or don't do with that person.
And there's something else worth mentioning-- the richness of expeience that can come with mixed relationships. In other sorts of mixed relationships, most of us can aknowledge the positive, whether it's learning the customs of a new culture or raising more accepting children. I have one parent that comes from a Catholic family, and the other comes from a Jewish family (hi guys). It was always great to have double the holiday traditions. Is there really a good reason why sexuality is so much more divisive than hot topics like race or religion? We usually just talk about the negatives in mixed-orientation relationships, but I think the outcome can be just as interesting, as long as couples remain open-minded (and that's a big "as long as"). I can't speak (much) of the heterosexual experience, but I know that someone could reap benefits from incorporating asexual culture into their own. It does, after all, involve cake.