She's not ready for it.

I'm not sure that you are ready for it yourself." Bertie's face fell.

"Why not?
I'm in dead earnest.

I want to marry her, just as soon as she will have me." "Quite so," drawled Nap, from the depths of the lounge behind him.

"And she, I doubt not, wants to marry you--even sooner, if possible." He had come up in his noiseless fashion unobserved.