Here's an article from Cosmo by Gregory Gilderman, "Dating 101: First-Date Red Flags," about lies that guys tell on the first date (http://dating.personals.yahoo.com/singles/datingtips/88111/dating-101-first-date-red-flags). They include "I never move this fast on a first date"; "I'll call you" (I certainly heard that lie a lot!); "I'm between jobs"; and "I've never had a serious girlfriend." Apparently, "I'm between jobs" can mean "I'm unemployed because I have no direction in life." But speaking as an underemployed person, I think you have to cut people some slack on that one in this economy!
I was most intrigued by "I've never had a serious girlfriend." I don't think I've ever had a guy say that to me on the first date. Wouldn't they be afraid I'd think something was wrong with them? Not according to Gilderman -- he writes that some guys say that, even if they HAVE had a serious girlfriend, as "a sly way of admitting he can't commit" -- or doesn't want to commit.