by Fishkeeper » Mon Feb 26, 2018 5:17 pm
Just use "they".
Have you never heard someone say something like "oh, someone forgot their phone, I hope they come back for it"? Technically, it isn't grammatically correct to use "they" for a single person, but grammar is a social construct that's constantly evolving and English has no single-person gender-neutral pronoun other than "they" or some of the newly invented ones.