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When a (usually) woman equates sex with love, thinking that because a man had sex with her, it means that he loves her. In men, it is often a nerdy type who has sex out of his league and turns into a total obsessive. Is often the trigger for stalkerish behaviour.
Dude, you can't bang her, she has Sex-is-love Disorder!
by Matti! Matti! Matti! January 03, 2011
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