Caught my husband sexting...

I recently caught my husband of 4years sexting using the kik app... he admitted to meeting one of there girls.. at this point we agreed to work on things out.. but everyday I have stupid random question that pop into my head.. some of them I ask him and others I keep to my self.. but it is absolutely driving me crazy.. I don't know how to move on.. I remind my self everyday this isn't the man I married..he has recently got out military and has been having a hard time adjusting to cilivian life again.. any advice would be great.. we have been together for 10 years and have 2 kids. He has said he is sorry and he seems to truly mean it. But where do I go from here...