Sentence:  Women, on the other hand, are wired to believe that men are always ready to reach home base and never turn down a booty opportunity. So when he <WSD>negs</WSD> you, it seems unnatural, and you may worry that something's wrong with your relationship. 
Meaning of the word marked with <WSD> tags:  To express or imply a negative value judgement of someone to make them desire one's approval, especially when trying to pick up a date.