Yes guys do go to therapy. It is hard and difficult at first. I have been at it for 20 months--many ups and downs--hurts and pain--and a sense of moving forward then some set backs. I do not give up--therapy and support groups have been my saviors along with some wonderful supporters. It takes time and therapy is sometimes considered a sign of weakness--but it truly is a sign of hope and more importantly freedom from the past memories and control of the abuser and abuse and those that try to knock you down. Please encourage him to go to therapy or a support group. In support he can sit silently until he feels comfortable to speak and talk about what happened to him as a child and how it affected his life.
Encourage and try to stay positive.