He saw some kind of machine that wouldn't look like a machine at all to anybody else but him.
He made a few changes into her mind, just to proof if all of that really worked.
First, he made she fall in love with him just by pressing a kind of button near his name, and inmediately he knew he should save first her preferences in case it worked. He saved it in Karyn's memory as something that happened a year before but was unforgetable. Then he chose what kind of love will he like. There where manykinds, like platonic and shy, but he decided to proof it inmediately and then "reset" Karyn, so choosed what he could see fast, he chose extreme lust + deep love.
Also he decided to temporaly change Karyn's mood to horny,"just to see the results faster".
As he get out. He felt like returning to his body and then felt something falling on him, something... soft.