The demon helps things along

All of a sudden, you feel invisible hands against your breasts, and Mark has a strange look on his face. His eyes change from shocked to lustful within seconds. It seems like he's trying to be a gentleman, and is fighting his lust. Still invisible, Kris starts to loosen your bodice. Marks eyes seem to be drawn to the sight. You move your hands to cover your breasts, but are unable to stop Kris from fully unlacing your bodice.

"I did not know you were so bold," Mark says, and leans in to kiss you.

His kiss wipes all your worries about Kris from your mind. The kiss is lustful, not sweet like you'd always pictured. Mark quickly pulls down your chemise. The demon must have hit him with the aphrodisiac, but you wonder how. Kris had to kiss you to make you turn into a puddle of lust. Maybe that was it, now that you were connected, some of the demon's seductive powers were transferred to you. In any case, Mark seems powerless in the face of Kris's magic. You try to convince yourself that it is magic that is making him act so quickly. Your precious Mark would have been loving if it weren't for the demon's spell, right?

Mark has you fully naked now, and you remember that you are out in the open. While this is the back of the stables, someone could walk by at any moment. The invisible demon seems to have noticed that you are hesitating, because while Mark is undoing his trousers, invisible hands have started caressing your lower lips. Mark, not bothering to fully undress, presses you against the stable wall. You wrap your legs around his waist, and he uses the wall to hold you up. It seems as though you are never going to fuck laying down.