Diane was living with Jeffrey and had an exclusive sexual relationship with him for two years. As Jeffrey wanted to have children and Diane did not, they broke up. Diane then met Jeremy, and they moved in together. When Jeremy moved away to California, Diane was unwilling to relocate with him and the relationship ended. Now, Diane is in an exclusive sexual relationship with Ron.
Diane's pattern of relationships illustrates:

A) serial monogamy.
B) polyandry.
C) empty love.
D) consummate love.

serial monogamy refers to an exclusive commitment to one person for a limited period of time. Eventhough the person believe love should be shared exclusively but they let go of the idea that it needs to last forever. It is unique however some stumbling blocks may arise along the way which may result to differences between two people in which the other sees no reason to compromise and then the relations end but the person still believes in monogamy and that they may still find another person similar to the one they left or even better. The person still have the hope that their current relationship will last forever but if it doesn't they will still move on with their love life. They still believe in finding another person also for that limited amount of time. These are people who consider monogamy is a crucial part of their lives but doesn't necessarily believe it is eternal.

Diane dated Jeffrey exclusively for a limited time of two years but they had some differences and she then dated Jeremy who also ended up moving away and then she moved to Ron whom she also dated exclusively so we can see a serial monogamy ; a series of monogamous relationships.