A sexuality that can be defined in different ways, such as
1 Being attracted to both sexes.
2 Liking more than one
gender.
3 Liking two or more genders.
4 Having an attraction towards the same and different genders.
All these definitions are valid, and bisexuality has always included trans people or non-binary people, liking trans people doesn't not make you pansexual.
Having another
definition for it (that isn't transphobic or binary) is also commonly used, such as liking all genders or having attraction regardless of
gender, which although it is "by definition" pansexual, someone who is bisexual can also define their sexuality like that.
Strangers on the internet or even people you know shouldn't tell you how to define your sexuality because it is YOUR sexuality, not theirs, and you know it best.
Another important
thing to say is that they are
straight, gay, or lesbians in denial. They are not confused nor is it a phase.