I have no doubt that the title of this film was changed due to the popularity of the Ryan O'Neal/Ali McGraw film of a later generation. But Love Story has certainly stood the test of time no matter what you call it.
A couple of the most beautiful women of the British cinema, Margaret Lockwood and Patricia Roc of the World War II era, compete for the affections of Stewart Granger. Granger and Lockwood have some secrets that they are withholding from each other. Granger is an RAF flier on leave because his eyes were injured during a bomb explosion and he is going blind. But an untried and tricky operation might save him. Lockwood had a bout of rheumatic fever which has left her with a weakened heart that won't get any better. She's a famous concert pianist who discovers she's slowly dying when she's examined after trying to enlist in the service for war work.
They meet at a seaside resort where Granger has gone back to his old trade of mining engineer looking for valuable molybdenum deposits for the war effort. In the end everybody's secrets do come out including a couple that Lockwood's rival Patrica Roc has.
Almost as much a character in the film as the players is the seaside area of Cornwall. Miles from any large city where population and war industry made it a target of the Luftwaffe, the seaside of Cornwall has never been more beautifully photographed. You'll not hear a shot or a bomb, the only explosion involved is during a key sequence in an old mine. Granger's keeping his secrets and some think he's a slacker not being in the war, but he proves he has the right stuff.
Love Story really cements Granger's star status in British cinema and at the end of the decade he's in Hollywood. Lockwood and Roc both had some American film credits but never attained the international status Granger did. Love Story on the other side of the pond ranks with films like Love Letters, Casablanca, and I'll Be Seeing You as great World War II romantic dramas.