>>149501331
The Prince of Tides, a 1991 film where Nick Nolte plays a married man who falls in love with a psychiatrist named Lowestein, played by Barbra Streisand. In the end, he goes back to his family, but thinks about her every day, repeating "Lowenstein... Lowenstein..."

https://www.youtube.com/watch?v=_05zOUyHnNA

It was a big movie at the time and got nominated for several Oscars, but got memory-holed with time. Also, it features a surprisingly harrowing gang-rape scene.