Married for ten years, with children. Just now I received a message from my first boyfriend asking me how I was doing. Should I give him a message back?

Personally, I think it is better not to go back. After all, you have a family and children now. Maybe you will feel that your relationship with him is broken and there is nothing to talk about, but your husband won't think so! This is likely to affect the harmony of your family.

I hope this helps.