This thread has made me realize I've never had any *actual* dates. The closest I've had is an internet date, watching a movie while in Skype, so I can't claim to have good or bad dates, just digital ones

Yes, I'm "dating" someone online, it sounds stupid but we're working on the real-life part 
On the note of the girl who'd dated three other guys, there's three questions. 1. Semantics; that is, dating them as in "being a couple" or dating as in "test-run for being a couple"? 2. In being a couple, was she dating all three at once? 3. If yes to 2., were they aware?"
Personally I find the idea of "test-run for a relationship" silly, the best way to actually start a relationship is to let to start as a friendship (okay, not always, but it's better than some stranger). As for polygamy, if you're up for it, whatever, but personally I like the "I'm special" feeling to a monogamous relationship
. As for the third, most people'd consider that cheating, that is, to be in two relationships at once and not have the approval for it to be polygamous, and most would also agree it's not okay.
To expect her to be your first and you to be hers and for it to last, though, is idealistic, if unrealistic. Go with what
you're comfortable with, though, not what someone else says.