Another sleepless night

So, the first time he didn't come home was the other night. I finally reached him at 2 am. He had some story about taking a friend to the hospital. I went to bed; he called for a ride after that, but the phone was downstairs. He decided to just stay there instead of walking at 2 am. He showed up at home at about noon.

I didn't scream or yell. I DID say that I didn't believe either of his stories. He got snotty and walked off. I grounded him.

So, tonight, after he told me he was going to work, he didn't come home again. I didn't notice until really late because I fell asleep with the youngest downstairs. When I woke up, he wasn't here yet. I called and called. Was it him just being an ass again or was he in trouble? Well, ass wins, he tried to sneak in at ~2, but the dog gave him away. I was still up anyhow, worried. He smelled like booze, but it could be the copious amounts of cologne he wears, and my desire to blame this behavior on SOMETHING...

Again, no yelling/screaming. He said he doesn't think we care because we think he is untrustworthy; I pointed out that staying out all night and not coming home when he was supposed to didn't exactly build trust. He stormed out again.

My first response was to lock the door. I went upstairs and realized that was an action that WAS uncaring. I went to look for him, even drove around. I'm not certain, as I type whether I should go lock the door, because I don't trust him....or to leave it open because it is damn cold. I'm opting for open.

I'm really not certain what I should do. He won't follow our rules. He doesn't respect us. It sucks that I did teach him resilience, but at least I think it'll keep him alive right now. He got the stubborness from me, too, so I doubt he comes back.