Well, if that is what you call communication, then I guess you did. No, communication is more than asking him a question. It is sitting down and really talking about concerns. I bet your question was asked in an accusational tone. If so, that is not communication. That is starting an argument.
Try getting him to sit down and talk to you. Tell him you are concerned about this sudden change in his activity and that you are worried about what it means for your relationship. You know more details than I so you would know better how to start a discussion with him.
Personally, if two adults who claim to love each other cannot sit down calmly and discuss their concerns, then you might as well throw in the towel now because it is all over but the crying.