Hmmm, it's an interesting dilemma. Your daughter is seeing an older man of low repute, what is your responsibility as a father here? He's definitely not going about it the right way, but a healthy amount of concern is valid. It's probably reasonable to want to meet him and see for yourself what's going on. Then again, I don't think there is any world where a father sees the condition of this dude and his relationship with his daughter and ends up feeling good about it. I guess you gotta find the mythical perfect balance of consideration and caution.