I am getting a new coworker that I will likely need to work closely with, and it’s a “they/them”. Haven’t seen this person or a picture yet, so not sure if it’s a female or male at this point.

What are some tips for dealing with this? Should I just completely ignore the issue and make on as if it isn’t “a thing”, just avoiding the use of pronouns? I want to keep my job, but I don’t want to betray reality and my principles.