Her dad sabotaged that 100%. I think she probably would have just gone along and had an overnight with no hanky panky, but after dad's talk about how when he met mom he "just knew", there was no way she was going forward. He is setting her up for lot's of break ups. Yes you should marry someone that "you know" is the one, but don't imply to your child that you should know right away. Some relationships build to a deep love. Some you just know. He and mom might've had that connection, but that's not necessarily how his daughters are going to experience love. Geez dad. You're a smart man, but let your girls have some room to grow in their own way. Cassie's going to end up getting married to someone she has amazing physical chemistry with and swear she "just knew", but then after some time passes she won't know how to just chill and enjoy each other from day to day.