http://www.oxytocin.org/oxytoc/love-science.html

Talking of love being an addiction, you might find the following interesting

Saffie
me 46
H 46
M in 1986
D20,D18,S16,D13
H's A 01/05 to 07/06
H recommitted to M 07/06
renewed vows 09/06
Going from strength to strength