It pays to be seen buying your rock hero's records, as far as GOO GOO DOLLS frontman JOHN RZEZNIK is concerned - he met his current girlfriend in a Manhattan, New York City, HMV store. The girl in question wasn't even aware that Rzeznik was looking over her shoulder as she was buying copies of his album for a hospital charity auction. He says, "She was out to raise money for this hospital charity she was working with and we started talking and I thought, 'Wow, I really like this person.' "I invited her to a show and that's how it started." The romance is getting so serious, Rzeznik is consider