What does Danny say to Lindsay when he is proposing?

He did propose to her twice, but I'm assuming you mean the second proposal? The one in "Green Piece", when they got married? :)

Danny: "Look I'm tired of being afraid, alright? You and me, we make sense. You're everything I've always wanted. I wanna be with you, and I can be the guy you want me to be. I know I can, I am that guy."

Lindsay: "I know you are."

Danny:"Then let's walk through this door together. C'mon let's do it. Let's take that leap."

the first time she said no second time she said do u got a money order