True love never gets old — especially for 102-year-old WWII vet Harold Terens and his 98-year-old bride, Jeanne Swerlin. The lovebirds, who tied the knot in 2024 and still gush that they feel like teenagers together, had some Valentine’s Day advice for the lovelorn. “Never give up.” “It’s never too late to find love, especially a great love — look at us,” Swerlin, a New York native who lives in Florida, told The Post. “You have to be open — love will find you.” Terens is among the last of the Greatest Generation, surviving a series of harrowing series of...