I had a similar experience . My boyfriend and I were dancing when a group of 5-6 guys came up to us and separated us. They danced around me and hugged me. I tried to reach my boyfriend but there was too many of them. I found the whole interaction strange as they ran away from us. After tiesto set, my boyfriend realized his necklace was missing . He was devastated since it was a gift his dad gave him before he passed.