What are their philosophies about dealing with anger?
How a partner deals with anger will probably not be discovered until sometime into the relationship. But you can find out viewpoints early on. Be wary of partners who can’t be with anger – their own or that of the people they are with. When anger can’t be expressed clearly and cleanly, and no effort has been made to learn how, you can be sure that other feelings will get stuffed as well as the relationship ages.