Melting Pot is perfect for chicks/dates. I like the food okay (and I've never gotten the runs, having eaten there 3 times), and I found there to be a ton of food so I don't know how you would leave hungry. Dinners take a good amount of time (perfect for a date), the atmosphere is moderately romantic, it's kind of fun to cook your food at your own table and try the different sauces, aaaaaaaaaaaaaaaand this is the big one -- your gf wants to try it.
I took my fiancee there for her birthday earlier this year, she loooooooooved it.