Actress Choi Jung Won couldn't hide her smile after Se7en's "proposal" performance. The two collaborated at the after party for the 30th anniversary celebration of fashion brand,�Louis Quatorze. Se7en performed his song, "Better Together," putting a tiara on Choi Jung Won during the surprise proposal as the audience cheered for them. His well-known girlfriend Park Han Byul probably understands it was all for the night's entertainment. Source + Photo: Nate