Agreed, I dont think she is a good mog match for him as he is clearly bending over backwards for this succubus. To tell him she's aware of his effort and then still only THINK about the wedding is messed up.

Not saying she has to marry him just because he asked, but if it was meant to be she'd have shouted "yes" the moment he was stumbling over his words at the end of the third act by the Gold Saucer entrance.