Have your new cellphone's bill come, with detailed billing, to your husband. It will help him learn to trust you again. This does not have to be a permanent arrangement, and I'm not trying to turn you into a Stepford Wife, believe me. But for the next 6-12 months, I think this would really help him.
Puppy
That would be a good start. You have to be willing to give reassurances.
sg Love is PATIENT, love is KIND, LOVE never fails / DB since 2001