One step at a time. I think you are very wise to begin over from "scratch". He has to prove himself worthy of you and yes, trust needs to be gained by and from his actions. Do not be surprised if he wants to sweep everything under the rug. They tend to want to do this. Also, an apology may not come in the way that you expect. Some of them have a difficult time apologizing and will do it in other ways.
Good luck!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
