lost it

Thought T was doing "better" or, at least, he was acting better.  He started school this week and made it through.  Because he's still using he has his moments and didn't come home until very early (~ 3:30 AM) and then last night - not at all.  It's now 3PM and nothing.  I then exploded on my husband.  I have some resentments that came to a head and lost it.  I resent him for catering to our son.  He wants everything to be as normal as possible and pretends all is okay.  frustrated
Update:  I am very glad I wailed on him because we finally talked about it.  We were going about our business like everything is "normal" so I needed to say what I said and I'm glad my husband finally opened up.  Whenever I tried to bring up anything that bothered me about T I've been shut down.  Husband never wanted to talk about it. Well, I forced him and, at least, we were able to get it out.  
I was trying to be positive about T but it's hard when he pulls this crap.
*Last night I found out that he wasn't coming home for another night.  He went to a college campus for the weekend.  A six hour drive away.  Nice - thanks for telling us.  Great - this campus has the reputation of being either the 1st or 2nd party campus in our state.  Not that that really matters!