We are collecting our daughter from uni this week and are going early to meet her boyfriends parents. They are middle class whilst we are from a working class background. We are much younger than them, we often show each other affection in public and like to joke around. Our dd has given us a list of rules about how we must behave because she really likes this boy. We’re not allowed to behave silly and definitely are not allowed to show pda. Am I being unreasonable by telling her that we’re the parents and we will just behave as we normally do?