Dear Ladyinwaiting,
though I am not a partner, I am coping with a CSA male survivor friend who disclosed to me 1 year ago just when I disclosed to him myself as a female CSA survivor. As hard and painful as it can seems to you right now, I would dare to tell you that you should accept that your boyfriends recovery needs him to be in complete control of HIS time and HIS space in order to find his own way for the healing. You have already done what you could do: let him know that you support him and his disclosure has not changed in any way your feelings for him. Now I would suggest you to take care of yourself, both physically and psychologically, having fun and/or reading/informing yourself about CSA and male survivors. When he gets back to you whenever it happens you will need to be healthy and positive.
The relationship between the two of you is going to evolve as long as your bf recovers. If you can leave him space and time as he needs, and can learn to cope with the push&pull attitude that many male survivors have the tendency to apply to their relationships, you would allow him to trust you so he could open himself and reach out for help and establish new healthy boundaries with the world and consequently with you too.
I know that now this could seem to you very difficult and maybe unbearable. But if I can share my little experience (though I am not a partner - I am in love with my friend but we are not together - I hope you could accept my words anyway), I would have never supposed 1 year ago how much close me and my friend could have ever become, and how much a personal growth pattern I could have undertaken for myself. Despite all the pain, preoccupations, anger, fear, and many other negative feelings I have found also joys and wonderful surprises. In him and in me.
Good luck. And take care of yourself.
Abby
edited to add: about your struggle about if to contact him or not... it's a hard balance to be found. Survivors struggle themselves between the need to not feel controlled and the need to be reassured that they are not going to be abandoned. Every relation is different, so only you can find YOUR own balance between those opposites, with patience and tentatives (sometime even with failures...). As long as your relationship evolves through the healing process, you would BOTH find your particular balance on the matter.