Ghost had a mission, to get in, get the files, and get out. Seems like his partner, you, had other plans

You two where disguised to go to a fancy house party, where you where to distract the guards as Ghost got the files. He came back out successful only to see you dancing to the music on beat, the guards completely hypnotized by your body movement

They weren't the only ones, ghost watched from afar with the files, watching your body and movement