Some Gays Can Go Straight, Study Says

[Angrboda]

Homosexual behavior, in some form or another, is observed throughout the sexually reproducing animal kingdom. What, exactly, is your definition of “natural”?

There are views of professional professors who state that animals who engage in homosexual activities do it for "Sexual Gratification":

https://www.nationalgeographic.com/scien...als-debate

Sexual Gratification

On the other hand, they could just be enjoying themselves, suggests Paul Vasey, animal behavior professor at the University of Lethbridge, Alberta, Canada. "They're engaging in the behavior because it's gratifying sexually or it's sexually pleasurable," he says. "They just like it. It doesn't have any sort of adaptive payoff."
Matthew Grober, biology professor at Georgia State University, agrees, saying, "If [sex] wasn't fun, we wouldn't have any kids around. So I think that maybe Japanese macaques have taken the fun aspect of sex and really run with it."

They don't need to practice homosexuality; just like cats don't need to hunt bugs but do it to have fun.

A human being who thinks shouldn't practice that act though; they should hate it and despise it even if they felt tempted to do it.

That doesn't answer her question.