This weekend we learned that the key to a successful relationship is the integration of positive and negative attributes. Therefore, your relationship success hinges on -1/3 x^3 + C. You're welcome.
Explanation: Hey, integration is tough for some people:

Special Blog Bonus: For those of you who are less mathematical, have no fear - the success of your relationships depends on Two-Face from Batman.

For those of you who are less mathematical and less mature, the success of your relationships still depends on Two-Face from Batman, but in LEGO form:
