Nothing personal, but it pisses me off so much when people hastily label others as trans. You know nothing about this person, yet as soon as they express any affinity towards femininity you think you know better than them. Stop it

If they are trans, it's up to them to find out and label themselves as such, if they find it to be appropriate. I've had feelings similar to this in the past, yet i concluded i was probably non-binary. You don't know this person, and it's not up to you to give them a label.