Hello Friend, Good that you are seeking a help here. Every relationship will go through such tough times and you are facing one such scenario. If you noticed this  change had happened recently, then something would have triggered him to behave in such a manner. He may be doing it with an influence of some thoughts or stress or experience of other. Better to figure out and address it. Would advise you to take a professional counseling help in such suitations. You will able to understand why such behavior from him and what are the measures you can follow to overcome this. As you have already taken the first step by approaching here, don't hesitate to take a professional help.