There is research on this, there are two distinct kinds of love, passionate and companionate. Passionate is in the beginning and generally lasts a year or two,

There is research on this, there are two distinct kinds of love, passionate and companionate. Passionate is in the beginning and generally lasts a year or two, while it fades, companionate evolves. Though companionate declines over time, some level of passionate is needed to keep the relationship lasting. http://www.apa.org/monitor/feb07/eternal.aspx http://www.apa.org/monitor/feb07/eternal.aspx