He is keeps something from her and I dont understand why?

My daughter has been dating this guy for almost 3 years not and its always been a pretty stressful relationship for her well us because she tells me everything. His mom is a control freak and when I say control freak I mean he is 20 years old and his mom won't let my daughter go sleep at his house that he is staying at while he is playing baseball. Or if he has a game then my daughter can go but she has to sleep at a hotel. The mother will also do stuff to piss my daughter off and then try and say that my daughter has an attitude and she doesn't know why. And then tell my daughter she can't go to her house while the son is down for break because my daughter didn't say thank you for something. Like what the hell. Now this last thing just happened like two days ago and today my daughter and her boyfriend were going bowling with some friends and the mom calls him saying that he can't take his truck that they bought for him to go do stuff with my daughter and that he needed to get back home. Again he is 20 years old and now they telling him that they dont want them together. Now he tells her he doesn't care what they say that he wants to be with her but he says that he can't stand up for her because then they won't pay for his school mind you he doesn't even want to be in school so he is waisting thousands of dollars. And he is failing. Now I understand that they pay for all of his stuff. But he is legally an adult and also a person that deserves to be treated like a person. And his mom is over stepping her boundaries in so many ways. Now with that said my daughters aunt and grandmother messaged his mom and said some stuff to her. I understand why they did it. But I also feel like if everyone would just mind their own business and let them live their life then none of this would be going on. But its the way the boyfriend is acting that is making me think he has more to do with what's going on then he is letting on. Stay tone for part 2
He is keeps something from her and I dont understand why?
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