Like most things, Virgos take dating very seriously. They pay a lot of attention to the little things about a potential lover before they decide the fate of the relationship. These are quick no-nos in a Virgo's little black book of dating rules...
1. Arrogance. Deep down, any threat to a Virgo's own ego is not cool. So, someone with an inflated sense of self - especially if unwarranted - is a total turn-off. Often, it's a Scorpio who commits this faux pas.
2. Sloppiness. Bad manners and an unkempt appearance won't sit well with refined Virgo. Sags, get it together!
3. Unkind to animals. This is a random one, but Virgos have a soft spot for animals, and if their date mentions not liking pets or - worse - is mean toward an animal on the actual date (might happen in a park or something... happened to me once with an Aries!), they will never want to see that person again.