What is Razumihin worried about at the start of the chapter?

Razumikhin awakens the next morning feeling awful both because his dream of marrying Dunya is impossible, and because he is ashamed of having berated her fiancé in front of her and otherwise acted foolish in his inebriation.

Though he decides glumly that he can never wipe out what he had said, he dresses and washes himself carefully. He feels how coarse and unrefined he is, and thinks that even if he were a decent man, that would not be enough for Dunya.