Your off to a great start by seeking information, reconzing this as the best way to support your friend. It is good that you grasp trying to “fix him” or be his “savior” is not your role and won’t work. It is his place to fix and save.
My advice, gently encourage him talk and talk and talk. I waited twenty years before I actually told of my assualt. I threw out nibbles of information here and there but never enough, it was to subtal for anyone to catch on. (By design) The fact that this friend trusted you enough to share this with you is amazing and you being here shows his trust in you is well placed. I hope you find the support “you” are going to need if you are going to travel this path (CSA)with your friend. EB
Is he open to suggestions such as this site?
Balanced (My goal)
There is symmetry