What can a person to do ruin an otherwise perfect date ?

He is rude to the waiter/waitress.

Women in my experience have 2 lousy habits on first dates. Talking bad about past men they have been with and texting on the phone on a first date. Both are rude and automatic deal breakers for me. One date with those women and it weeds out a ton of them. Love the ones who say they hate men but are on a date with you..the man. How dumb can you be.

All is going well until... someone drops the L word.

Lesbian.

They can mention they have Herpes and love to share.

the spouse shows up?

I agree with Glitterinthesky...if they are disrespectful to anyone really. Also a shart can put an end to things.

Vomit on purpose, then collect it in a jar and carry it with them.

Mention a former lover.Again and again........

Start complaining about their ex.

I once went out with a woman and her first order was 6 alcoholic drinks halfway through she said she did a train with 6 guys the weekend before

@gladiator3 it is very rude, but remember some of are moms, and need to keep in touch with the kids

Check their phone.Turn them off peeps!