Cast Away 2000
Chuck, a top international manager for FedEx, and Kelly, a Ph.D. student, are in love and heading towards marriage. Then Chuck's plane to Malaysia ditches at sea during a terrible storm. He's the only survivor, and he washes up on a tiny island with nothing but some flotsam and jetsam from the aircraft's cargo.
Spoilers for Cast Away
Submitted by: jarllyng
Tom Hanks escapes the island after several years and gets home, only to find that his girlfriend got married to someone else because he was presumed dead. Bummer.