But I don’t see how a husband’s attraction to his wife could be so cut and dry as “I want to bang your personality but not your looks.” He loves her for everything she is, and forcing him to break that down into “attractive” and “unattractive” attributes is unproductive, and not necessarily indicative of anything.

Prince Charles cheated on Diana with Camilla. No matter how gorgeous you are and how 'attracted' your mate is, if they want to cheat they will cheat. It's not always based on physical attraction.