Irreplaceable You is built to be a tearjerker, but it's working from a blueprint that's out of date. Its quirkiness is too forced and its humor too trite for there to be anything to hold onto.

It sounds unbearably beatific; it's not. Irreplaceable You is not afraid to depict its central characters as unreasonable jerks....The lactose-intolerant have nothing to fear: no cheese was used in the making of this movie.

It would serve its audience better if it paid more attention to a stronger structure and a believable plot, but its flaws don't keep it from being affecting for those who like their love stories on the lachrymose side.

You will not enjoy much of the hour and a half that precedes the climactic scene... but if you are looking for an excuse to bawl your fucking eyes out, Irreplaceble You will definitely do the trick. But you won't feel good about it.