Serendipity

Serendipity is a movie starring John Cusack, Kate Beckinsale, and Jeremy Piven. A couple search for each other years after the night they first met, fell in love, and separated, convinced that one day they'd end up together.
Although strangers Sara and Jonathan are both already in relationships, they realize they have genuine chemistry after a chance encounter – but part company soon after. Years later, they each yearn to reunite, despite being destined for the altar. But to give true love a chance, they have to find one another again.