The one who didn't really love you that much but then starts to show you that they love you, that person is a powerful influence on your behavior.

爱你不深的人,开始对你示爱，这样的人会强烈影响你的行为。

耶鲁公开课 - 心理学导论课程节选

And these aren't necessarily so incompatible but the evolutionary perspective I think would argue that you can feel that kind of love for more than one person or at least it would facilitate the passing on of your genetic material to a larger array of the next generation.

两种观点不太相容,但是持进化论观点的人认为,你可以和两个以上的人拥有完美式的爱情,至少会促进,你的基因传给更多下一代的人。

耶鲁公开课 - 心理学导论课程节选