What should I do if I haven't told my 28yo husband that he is starting to show signs of premature balding?
Why don't you want to tell him he's balding?
He might get so upset that he cries.
I'm sorry your husband is going through such a thing, but you need to tell him right away. There are lots of treatments available to halt or stop further hair loss, you so need to support him as soon as possible.
What do you want me to do, I don't want to make him upset about something that he cannot do anything about.
Telling your husband that he is starting to show signs of balding will allow him to remedy the problem before it becomes something that he is embarrassed about.