Whoever is a parent or knows parents well. help?

My 24 year old daughter has been talking to the same guy she met on my space for 3 years.He is the same age. I have seen pictures of him and the things he likes to do,the troubles hes had. His choices he has made. He seemed ok. Then my daughter said she wants to move down south to be with him. I said,have him come up so the family can meet him.He left for the south today after two weeks of visiting the family. We all feel better knowing him,and she has our blessings. My kids always talked to us about the things going on in their lives,never did hide too much. They actually think they have reasonable parents! If my daughter was 18 I might have a problem with all this. But my daughter has been on her own for a while and can take care of herself. If something were to happen she could take care of herself again! How old is this guy? That will have alot to do with this. If he is your age it might not me so bad. Let your family meet him.