Science is trying to get gay straight

 No one can turn a homosexual into a heterosexual.

It is that the bisexual does not know he is a bisexual and have the taste for a opposite sex for life. 

Do the Kinsey Scale Test and see how heterosexual you are. 

 https://www.idrlabs.com/kinsey-scale/test.php

Thereafter, you know heterosexual is a very small group.

 Heterosexual people have been less interesting to scientists than gay people, in terms of where they come from, because, evolutionarily speaking, being gay doesn't lead to a higher "higher reproductive fitness" — meaning, it doesn't lead to more babies. Across cultures, gay boys tend to be more interested in spending time with their mothers. We still don't really know why gay people are attracted to each other.