Yup whatdidido...I said if. I am on side with not hurting your H any further.
If the OM is GONE and there is no chance your husband will find out about any of this contact then I am on side with you to hide it.
But if the OM is lingering at all and the H is going to find out, he should find out from you..it will hurt a LOT LESS if YOU tell him...if you want to spare him hurt and he might find out anyhow, you are risking him getting hurt MORE by rolling the dice here..
If he doens't find out, he will hurt less than if you tell him. If he DOES find out from OM then it will hurt him a LOT more than if you told him.
You are gambling here...that's my concern...this is the classic gamble dilemna.
The real tragic part is the OM is stalking you rather than respecting your choice...he knows you're vulnerable and the fact that you hadn't changed your phone number may have sent him a message that you want to keep lines of communication open.
If I ended an affair with a married woman and tried to call her and the number was the SAME..that would tell me she may still be interested...if it was CHANGED I would take the hint and leave her alone...
I think you should change the number unless your husband insists..I would tell him you want to protect yourself, him, and your family and changing contact info will help you feel better