This is an interesting discussion. All of the Phychological areas of study have touched upon it as well as other areas, such as neurology ( which is my interest) but they all seem to fall short of just actually falling in love for yourself.

It seems that "falling in love" has so many meanings that it would require a family of psychological descriptions.

I think a more interesting question would be: What is the relationship between neurology and falling in love/infatuation and sexual attraction? Sorry...there are a few questions in there.

...i will clarify...is there a psychology of love and attraction?

The relationship can be explained as "Falling in love" is the act where psychology is study of the act.

Psychology defined as the scientific study of the human mind and its functions, especially those affecting behavior in a given context.

Falling in love is the development of strong feelings of attachment and love, usually towards another person. The term is metaphorical, emphasising that the process, like the physical act of falling, is sudden, uncontrollable and leaves the lover in a vulnerable state, similar to "fall ill" or "fall into a trap". Wikipedia