Remember to pull the boy aside (when he shows up for the first date) and tell him nice and quietly that "She's my little girl and there's NOTHING I wouldn't do for her.
If you hurt her, I will hurt you in return.
Remember that I have a gun, and I have no problem going back to prison for my little girl!"
Then see if he sticks around....
(I think I heard this on the "Blue-Collar Comedy Tour")