Precisely my thoughts as well. It doesn't matter what anyone else thinks. all that matters is one's personal happiness.
Now that would make for an awkward conversation. Parents should really learn not to ask. They will be told if and when it is deemed important enough.
I, for one, will never pry into my daughter's love life. All that I will say is that I don't care so long as she's happy and the other person is treating her well.