Hiya Glow Worm!
Please stop worrying about whether he loves you or not. What's not to love? At 3 weeks he simply still feels rotten. Remember, too, that while they're drunk they don't have to face the havoc their drinking has caused. He's not blotting out the guilt right now, so he's working through that, too.
Buy yourself a bunch of flowers today and write a mushy card to yourself. Make sure you tell you HOW DARN LOVABLE you are! Read it every fifteen minutes.
Hugs!
Smoke