Am I crazy?

So I've been with my boyfriend for a year now and we live together (wth my mom and siblings) and he thinks I'm treating him like a child. Here's why.

The way I was raised even though I'm 24 (he's 28) I still tell my mom and him where I'm going and depending on where when I'm coming back and I expect the same from him. He has a few occasions say he's just going to the store and then six hours later he's still gone and come to find out he went to hang out with a friend. Now let me make it clear I don't care that he's with a friend and I have no issue with his friends but it's like you could've told me that much and that you would be gone for x amount of time. And in addition to that he sometimes uses my car for these outings (he doesn't have a car currently) and I feel I have a right to know where my car is. I don't feel that is treating him as child but just expecting common courtesy.

Now another thing he has done is he'll be planning on leaving and hanging out with a friend and will walk down the road to meet them which comes off as sketchy to me. It honestly makes me think he doesn't want me to know who he's with and put that with the fact it's been like five months since we had sex (that is a whole other post) it makes me suspicious.

Ladies am I crazy or what?