I've lost track of all the comments I wanted to quote or respond to. :)
I think I have a different take/feeling about Luke than most. I don't think he's evil, abusive, or even manipulative ... I think he's flat out scared. He's wanted Rayna forever and now she's finally with him and says she's in love with him, and he wants to believe it but probably deep down knows she'll never love him as much as she loves Deacon. He's lying to himself, thinking that pressuring her into a quick marriage will somehow make it true that she really does love him most and it will all work out. He's wrong, but I think that's his motivation. I can't even really blame Rayna, because while I also love Deacon - and I honestly don't think she'll never really be happy with someone else - you can only be burned by someone so many times before you have to grow up and give up the "bad boy" that you adore but never feel safe trusting.
Also, I am sick of how Maddie is acting. In my opinion, Deacon is not her "dad," he is her father. Those words have very different meanings in my world, and while I sympathize that Deacon never was given the chance to be that, he brought it on himself. As Rayna pointed out, how were they supposed to know that the 13th stint in rehab would be the one that took? Teddy has aleays been there being her dad, and I think the way she has kicked him to the curb for her shiny new daddy toy is appalling. She's 15, not 5. (I may have some personal baggage around this considering my bio father was an angry alcoholic for much of my growing up years, while my so-called "step" father was the most wonderful, amazing DAD anyone could ask for.)