Is it normal for parents to act like this?

My son has had a few girlfriends with parents like this. Like he was dating a 20 year old and her parents really liked him. He went and picked her up while her parents were at work and brought her to my house to watch a movie and to basically meet me. Well they had been here for like 30 minutes and her mom was literally beating at the door telling her to get in the car. A couple more episodes like that my son broke up with her. But from a parents perspective it is sooo hard to let go, I have let go of 3 children and fixing to with a 4th one. Most parents are hard wired to give birth and take care of their child for 18 years and then bam…they are not needed anymore. I don’t say anything about where my son goes cause he is over 18 but I have to hear from him because I care about him and want to know he is ok. I am a worry wart and he knows it and he does call and let me know he is ok. You kind of have to abide by your parents rules if you are in the house. I don’t say 11 pm but I do tell my grown child that he needs to be home at a decent hour because everyone has to get up in the mornings, and I have to indoor dogs that bark at anything. But sometimes the parents just will not cut the apron strings and sometimes if that is the case then the child has to. That means moving out. If you think you can, set them down and have a talk with them and tell them that you feel that 11 is too early and any others things are bothering you about how they are doing. If you can’t come to a compromise like that, then start making plans to move out. But do not let this be the deciding factor in moving in with your boyfriend. If you think you are ready for that, then do it but if you are not sure, then maybe you need to get your own place. Good luck!