Mary-Kate Olsen and her boyfriend, Olivier Sarkozy, were arm in arm for a romantic stroll around Paris last night. They stopped to browse through a jewelry store during the evening outing in Olivier's native country. The pair are no strangers to showing off their affection. Shortly before the holidays, Mary-Kate and Olivier cuddled courtside at a New York Knicks game, where they have frequently been caught canoodling in the stands together since the start of their relationship. Although there is a 16-year age difference between the pair, they have gained the affection of many and earned a spot among your favorite new celebrity couples of 2012.