When you first meet someone, they have no idea of anything about you. Meaning you also know nothing of them. When this happens, it's easy for LGBTQIA+, specifically trans anything, for them to see you as what you go by, if you physically meet their standards for that gender. However, the hardest part of the whole operation is when they meet people who know your biological sex. Like family or childhood friends. Or when you both like each other. And you're both too scared to ask. Or they only like the gender you identify as. Say you're a trans masc. You'd be scared they won't see you as a "real boy". Opposite for trans fem. That's truly the hardest part. The way I see it, being trans is a giant game of Jenga. One wrong move and the whole tower falls.