I believe, as many others do, that human sexuality is innate. In other words, it doesn’t change, which is why conversion therapy doesn’t work.
However, what I do think is as we go through the process of understanding our gender identity, some facets of our lives that have been suppressed may be revealed. Like this:
When you clear the clouds, you can see the next mountain. From that mountain, you can see the next, etc.
There is also the notion that being attracted specifically to one person does not necessarily that you would be attracted to others. This could be the case if you are not attracted to anyone else…