VIDEO : Jennifer Lopez's Longtime Backup Dancers Just Got Engaged Mid-Concert

One of Jennifer Lopez's backup dancers truly just took leaving it all "On The Floor" to the next level. At the end of the pop star's Las Vegas show "All I Have" on Monday night, her longtime backup dancer Lake Smits took center stage to propose to fellow backup dancer Tera Perez?and the resulting video couldn't be sweeter. J.Lo shouted "She said yes!," as Lake slid the ringer on his new fiancé's finger. She then turned to the crowd and added, "I love these two. He's danced with me for many years, Tera's danced with me for so many years. Thank you for letting us have this moment."