When you think about some of the most romantic places you’ve been, Marine Corps Recruit Depot Parris Island, S.C., probably doesn’t top that list. But Cpl. Jonathan Camp said his boot camp graduation day was one of the happiest of his life. So when his girlfriend, Pfc. Kathleen Finn, had her own graduation day there, Camp thought it’d be the perfect place to ask her to marry him. Camp, 21, is an infantryman currently working on recruiting assistance duty in Erie, Pa. He drove nearly 15 hours down to Parris Island to see Finn, 22, graduate. He brought poolees –…