So, principles instead of methods. Like this? I'm not sure universal, empirically-validated game exists. With one relationship, it isn't usually as simple as 'this caused this'. With multiple, you might be able to pick out correlations and hypothesize causation. The best you can do is gather everyone's stories, create theories, test them, see what sticks, and then use blog/forum archives to write handbooks for people seeking general relationship advice. This has obviously been done many times, focusing on sex, long term relationship, marriage, family, and religious family.
I don't think it makes any sense to model a relationship as "a system with subsystem and component failures". Doing so successfully would probably be human-level AI-complete.
The closer you follow the letter of these commandments, the easier you will find and keep real, true unconditional love and happiness in your life.
That's just sickening. Also, it's a list of attitudes, ways to manipulate your lover into being obsessed with you, mostly by exploiting the addictive effect of "unreliable reward".
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.