Some people think that you are gay if you meet a transsexual person. However, this is just a stereotype not tied to the real world. In fact, you are not gay if you like trans. Quite the contrary. Note that it is about a transgender woman! If you are a heterosexual male into females, you may fall in love with a transgender lady because she is a woman. She dresses, speaks, and walks like a woman, having a correspondent appearance and external sexual characteristics.
Okay, if your trans match has no surgery but still has a penis, you might identify yourself as a bi-sexual man. However, your attraction can take the form of aesthetic admiration. Generally, you should think about your feelings and figure out your preferences. This is not challenging if you respect, love, and accept yourself. Confidence and an open mindset are keys.