Is there a romantic relationship between different species?

Her (film)
The film follows Theodore Twombly (Joaquin Phoenix), a man who develops a relationship with Samantha (Scarlett Johansson), an intelligent computer operating system personified through a female voice.

As mentioned by Dr. Kinsey, a sex researcher:
Not everything in this world is black or white. Sexual orientation should be a spectral distribution, not the ends of zero or one of comrades or straight men/women.
Kristen Stewart "In another three or four years, everyone will not be entangled in the fact that you are straight or curved, just like doing your own thing, it is normal.