Should you tell your son that he has a half brother?

Hi my name is Sarah i am 13 years and i have known that i have a half brother for many years now. If you feel your son is old enough to know then you can tell him, i love my half-brother soo much i dont even think as him as one. There shoild be no problem in telling your son about his brother. If you have any other questions in relation to this feel free to ask (: let me know how you get on (:

Sarah xD