This is an interesting topic.
For myself, I have had encounters with males a number of times in my life but have always considered myself heterosexual. Since coming out a few years ago though I have rethought where I am and considered myself bi, though I haven’t acted on those feelings. Recently, after a discussion with a friend, I have rethought it again and would consider myself to be pansexual.
It will be interesting to see what others have to say.