I think you should tell him. He's gone thru all these battles with you. He will understand, he will not like it I am sure but he will love you. He knows what you go thru and why. I think the best thing is to be honest. I probably wouldn't whip out the cuts but tell him first. After you can also tell him your chain of support that you have created to try to prevent it from happening again.
Just what I think, you really have to do what you feel is best. I imagine it's hard. You maybe are embarrased or feel like you have failed but that's exactly why you need his support and love.
Hugs,
Heidu

Every path to a new understanding begins in confusion- Mason Cooley