I figured expecting the other person to pay would've been one

A poll was done with 3,000 people asking what they thought were faux pas on a first date. The results:

1. Clicking fingers at the waiter
2. Adding salt to the meal before tasting it
3. Getting drunk
4. Licking the plate clean
5. Burping
6. Picking teeth with fingers
7. Licking the knife
8. Slurping soup
9. Talking about sex or bodily functions
10. Not leaving a tip

I think I might have been guilty of numbers 2 and 5 - keep in mind I would have excused myself after 5.