"Never love anyone who treats you like you're ordinary."
- Oscar Wilde
Generally speaking anytime a woman uses terms designed to attack the "manliness" of a man it's either "sour grapes" on her part or she is a manipulator. Examples include statements like; "A REAL man would do this or do that." In other words a "real man" will do whatever it is (she) thinks a man should do. Maybe he's just not the right man for her! Another woman may be very happy with him.
Some guys just are not argumentative and would rather walk away then risk escalating an argument into a physical altercation. This is especially true if the woman is angry, cursing, or (getting in his face). It's kind of "catch 22" for these types of guys. If he walks away he's a "coward" and if he loses his temper and hits her he is also a coward.
He may have decided he'd rather be alone in peace than to deal with her. Most people would choose to be with those they enjoy visiting.
"Better to dwell in the wilderness, Than with a contentious and angry woman." :)