Umm, why don't you just ask him what you need to do so that he will trust you or how he's going to know he can trust himself?
To be serious, it takes a bit longer than 10 months for most people to begin to lock in. The first 18-24 months are the honeymoon phase for most men, so it's difficult to imagine what things are going to be like when that wears off.
Maybe there are things from your marriage that you haven't worked out that you are trying to work out in this relationship?
M-47,W-40,No kids D-filed 5/27/2010 Piecing - 10/21/2010 -=Soon to be banned=-