Can porn change your sexual orientation?

Porn cannot change your orientation, it can show you there are things that you were not aware of yet, that will arouse you, but this doesn't mean it was porn itself doing it, it was just the exposure, in privacy. I know gay men who strictly watch straight porn/lesbian porn, as well as straight women who can only climax while watching lesbian porn. This doesn't mean their orientation is different outside of masurtbating. One of my gay friends has even had sex with a few girls (not in a threesome situation) yet lacks romantic relationships, just like my straight friends (females) who enjoy lesbian porn, but will not have any relationship with a girl, outside of fantasy.

Sexuality is obviously more fluid, for some people, as everyone is different and taboo can have major appeal, especially with porn and fantasy.

The thing to take note of, like I always claim, is that your fantasies/sexuality can always have a broad range of choices, if you're open to it. But ultimately, you will find genuine intimacy and a lasting relationship are with the gender you prefer on all sides of the spectrum, not just sexually. A lot of people can have a curious and bisexual side, but dating and being 100% invested, is always with the gender that coincides with your orientation.