The way I see it is if a husband is going to cheat, he will do it whether you are suspicious or not. I wouldn’t want to be in a relationship where I feel I need to cock block that person, that’s not a healthy relationship. It would mean I have trust issues. Your husband is with you, loves you and hasn’t cheated before, so I don’t think you have anything to worry about. As the woman you are worried about is so far away, it seems like maybe they are just becoming pen pals. I actually think you should maybe get a pen pal add and write to strangers and learn about different people of different ages and countries, you might enjoy it. Perhaps if you send your husband a sexy pic or two unexpectedly, it could kick start bedroom actives again.