I don't think that this young man should be asked what his "intentions" are regarding your daughter or made to feel like you're judging him. Behaving in this manner will surely cause your daughter embarrassment and probably cause her not to spend time with this boy in your home. As for getting to know the boy's parents: these kids have just begun dating, not planning their wedding. See how your daughter's relationship develops with this boy before scheduling a social activity with his parents. If you'd simply like to meet his parents because you think you'd all have a nice time together, invite them and their son for dinner. Don't focus your discussions on your children. You don't want to appear to be grilling them for information about the time your daughter spends with their son.
Dating Teens and Their Parents
Toddler and Teenager Expert Advice from Carleton Kendrick, Ed.M., LCSW