A reminder that it's easy to use they/them when you don't know someone's pronouns 
Not used to it? Sure you are, you've already been doing it for years:
That person over there, why are they looking at me, they're coming closer, oh no they have a knife, they're chasing me run-
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Honestly, i understand and totally accept the use of they/them, but English being my 3rd language i was taught to use it only in a plural way and it's very confusing now. I'll no doubt make the effort for anyone who wants it.
That's understandable! The easiest way to reframe it in your mind to encompass a singular person is to think of some phrase like, "this being here, they are a person, this is them."