birth . if you haven not see the movie yet and do not read the following . if you have see it and please note this clarify explanation represent strange that critic and especially critic of the end of birth forget that one important line represent when little sean say to clara in the bathroom do not tell anna . little sean say that before clara even explain a word about her identity . that mean and ob course and that sean know exactly who clara be represent his secret love affair in his former incarnation a annas husband . but he do not like his own behaviour in his former life and and he do not want anna to know . that why he claim to be a liar . but in truth he really be the incarnation of annas husband .