Constant,
IMO I would not call your friend. Why? I think there is always a danger that a man and a woman who are friends might end up feeling more than friendship if they spend too much time with (talking/chatting/seeing) each other. The flesh is weak and there is no need to help it along. The closer you come to the fire, the more likely you are to get a spark on you! Keep your marriage safe. Suppose the opposite. Your husband has a female friend and spends time with her every day chatting and now would like to call her instead of chatting online. What would you think?
If your husband feels uncomfortable with it, listen to him.
This is just my opinion.
Blessings.