Well...my last post was deleted for being too explicit, hopefully this one's a little more tame.
There are a lot of underlying factors that people are just making assumptions upon. Perhaps the father knew who this boy was - perhaps the kid was a drug addict, the fact that he'd sneak into a man's house to do what he was doing shows that he doesn't have the kind of integrity I would want to see in a man doing that with my child.
Just because he didn't know about the boyfriend for a year doesn't mean he wasn't letting his daughter date - maybe he just didn't think that this young man in particular was fit for dating.
That being said - if you aren't man enough to shake the hand of the father who's daughter you plan on having a relationship with - who has sacrificed more of his time, effort, and emotion than you can ever possibly fathom until you have your own children, then you are not man enough to be having sex.
If the PC world we lived in weren't so backwards to begin with - this guy would be praised for what he did. Instead he gets the shaft, and why? Because he is doing what he knows is best for his child, his investment, his legacy.
Sentenced to jail or not, I'll bet you money that father's only regret is that a judge could be so blind, and I'll bet that kid won't be sneaking into his daughter's room anymore.