Tangled (2001) on Netflix

Plot summary

David Klein is wheeled into a hospital emergency room after an accident, bruised and unable to remember what led him there. He tells police detectives that he and his girlfriend, Jenny Kelley, have been kidnapped. Asked what he remembers of the day before, David moves between the present and the past. In college he met Jenny, wrote poetry for her and spent hours discussing literature with her, and she made clear that his romantic feelings were not returned. At a family function David invited her to, they met Alan Hammond, and Jenny and Alan felt an immediate chemistry. Alan asked Jenny out and the two became a couple, while David resented the pairing and began avoiding them both.