You were rude and/or negative
“This should be common sense,“ says Natalia. “But all too often I hear people being turned off of second dates because of rude, unattractive behavior. Being rude to a server, checking your cellphone, being late without warning, talking shit about exes, co-workers, or friends, and the list goes on. In contrast to physical appearances, we have much more control over how we behave. More people need to exercise that control.”
Negging may have landed a few floozies' phone numbers for a handful of hopeless PUA dorks in The Game, but negative energy overall just makes you look like an ass. No one’s asking you to act the part of some smarmy concierge. Just act like a decent human and ensure everyone -- including service staff -- walks away from the date feeling better about themselves.