The Infinite Man (2014) on Netflix

Plot summary

An anniversary weekend at a hotel is Dean's plan for himself and his girlfriend Lana. Dean, an inventor, has arranged the whole getaway himself, and it is meant to be a romantic one. Lana's ex-boyfriend Terry, however, turns up at the hotel without warning, and the argument that follows goes badly. After it, Lana leaves. Dean, distraught, stays on at the hotel and spends a year there constructing a machine meant to redo the day. When their anniversary comes around once more, he telephones Lana and pleads with her to return, hoping the machine will help him set the failed date right.