I am also someone with the same problem of never finding anyone to date who is serious about their Catholic faith. It is frustrating to no end for me. I have looked in my parish, either they are all married or are too young or way too old.
I have tried Catholic singles sites, but I guess I have to pay in order to get in touch with anyone on them, arghhh! Though they may very well be my only ticket out of bachelorhood and into a faithful Catholic mariage.
I also live in Minnesota, where I must say a large percentage of Catholics here are of the cafeteria variety. And where liberalism and lukwarmness are very prevalent.
But then again they say, pray pray pray, God will do anything in his time. Though He does seem to work very slow for many of us.