Things are getting serious for Ashton Kutcher and Mila Kunis! A few weeks ago, Ashton and Mila headed to Cedar Rapids, Iowa, to spend a long weekend with Ashton’s family, In Touch has learned exclusively. Though Ashton’s relatives have met Mila before and they seem to like her, as they claim she has “grown up quite a bit” since her time on That 70‘s Show, there is still one family member who’s confused by the actress’ presence. The pair got to spend some quality time with the Two and A Half Men star’s 8-year old nephew, who thinks Mila is awesome but doesn’t understand what happened to his Aunt Demi. According to a source close to the family, Ashton’s nephew loves Mila and the fact that she stars on Family Guy, but was wondering why his Uncle Ashton was “kissing a new girl.” Even though the couple acted affectionately in front of the others and even slept in Ashton’s parents' basement together, no one in the family really wants to break the news to the boy. “They both love kids,” our insider says of Ashton and Mila. “I think babies would come first before marriage because they both really want babies, and I don't know if he is ready to get married again."