"Remember, I was your master once! I will be your master again. If you are any man's wife you are mine!" (47.39)
Alec is angry after Tess smacks him with a heavy work glove, and he actually says what he thinks: that he has some kind of natural right to Tess, just because he's the first man to have had sex with her. In his mind, this makes him her "natural" husband.