1. Going on a rant about a former significant other.
2. Divulging too much personal information that’s not flattering.
3. Making the date feel like a job interview.
4. Having too much attitude.
5. Visibly admiring other women.
6. Complaining about the chosen venue for your date.
7. Arguing combatively with your date.
8. Eating your date’s dessert.
9. Not walking her to safety at the end of the date.
10. Saying “I’ll be in touch” after the date goes badly.