Major empirical causes of romantic conflict

…in my entire life, that I can remember: 

• Anthropic reasoning

• Population ethics

• Kitchen hygiene

• My apparent preference for continual reassurance that I exist, e.g. by the other person responding if I speak to them

• What being in a relationship should imply about behavior in almost causally disconnected universes

• The distinction between not having sexually transmitted diseases, and not having checked whether you have sexually transmitted diseases

(Not to suggest that any bother me now, I just think the list is interesting: maybe I should more often date outside the rationalist community, and inside the talkative hygiene enthusiast community?)