It’s ironic how the idea of “rape in marriage” can even be entertained by modern legal systems, except under special circumstances that involve something other than mere normal sex (no, you don’t get to sodomize your wife, no you don’t get to practice sadism upon her, you might be expected to refrain if she has an unusual medical condition that would make sex dangerous to her life, etc.). While it may be poor marital relations not to care if she has a headache, it ain’t rape.