Hang on--So not only did they fall into, like you say, immediate infatuation, and she 'doesn't know his *last* name' but presumably they would have exchanged first names?
Because she meets a well-dressed man name Leonard at the Leonard!Durand store, who gave her style tips on her Leonard!Durand outfit, and tells her she is indeed special enough to wear an oh-so-special Leonard!Durand...
I like to think that Brenda does almost the exact thing once every couple of weeks, with as much drama every time.