Woman A: The only rules my boyfriend and his wife have that I know of is complete honesty and [STI] testing before sexual contact. So I'd respect those if I decided to date a second man. Both are smart anyway. :). Woman B: Yes. Our only rule really is to always be completely honest with each other.
Archaeologists have discovered tomb paintings of bundles of prickly lettuce and these have been dated to be 4,500 years old1. The first written records of lettuce cultivation and consumption was by the first ancient Greek historian, Herodotus. He recorded that lettuce appeared on the tables of the royal family of Persia in 550 BC.
Lettuce and cabbage grow their outermost leaves first, they've been exposed to weather, animals, bacteria and other microbes, pesticides, etc. for the plant's whole ~6mo time-frame between bud and harvest. They're simply too high a risk. So yes, you absolutely can be made ill by lettuce. The odds are in favor of it.