First off here are four definitions:

• addiction – a state characterized by compulsive engagement in rewarding stimuli, despite adverse consequences

• reinforcing stimuli – stimuli that increase the probability of repeating behaviors paired with them

• rewarding stimuli – stimuli that the brain interprets as intrinsically positive or as something to be approached

•Intermittent Reinforcement - reinforcing stimuli that happens erratically or randomly

For most girls, a guy that responds randomly, and with seemingly random amounts of interest is far more interesting than the one that responds every time with consistency. this is due to intermittent reinforcement. Intermittent reinforcement affects the way we think about rewards. Think about slot machines. Slot machines are programmed to keep a small percentage (usually 5-25%) of the money and pay out the rest in "random" winnings and jackpots. If the payout was predictable, for example, if on every play the gambler entered one dollar and got back exactly 90 cents, the odds would be the same but the gambler would quickly get bored and annoyed. What keeps them feeding the machine is the frequent small payouts (2-10 times the bet), the occasional medium sized payouts (50-100 times the bet) and the dream of the rare payout (over 1000 times the bet). Most people will feed small and medium-sized winnings straight back into the machine and keep playing until they get bored or go broke. That's how intermittent reinforcement works. Now what I think is that by randomly responding to women with random amounts of interest you trigger their brain in much the same way. I think that by sometimes not responding or by responding with very low amounts of intrest, you trick the brain into being really excited about the random times you do respond very positively.

Links:

http://www.intropsych.com/ch05_conditioning/intermittent_reinforcement.html http://en.wikipedia.org/wiki/Behavioral_addiction#DSM_or_.22Impulse_control_disorder.22 http://en.wikipedia.org/wiki/Reinforcement#Primary_reinforcers http://outofthefog.net/CommonNonBehaviors/IntermittentReinforcement.html

Edit: this is actually a hypothesis not a theory