Kevin accepts it

"Sarah... my faithful ****, you showed me how wrong I was, and I will thank you this time."

Kevin began to speed up, which made the room audible with loud slaps mixed with a woman's moaning. She hugged his chest and tried not to fall off his dick. Kevin took hold of her soft cheek with one hand and pulled. The mask stretched out exposing Sarah's skin through the mouth of the mask. She began trying to pull away from Kevin.

"Noooo... Don't touch please! I'm not taking the suit off!"

"I'm just teasing you, it makes me terribly horny that you're still somewhere inside that beautiful shell."

Kevin let go of the mask and it slammed back into place then instantly as if it were glued to her skin. In response, she grabbed Kevin's cheeks and began pulling at them. With some effort the skin stretched a little, but Kevin immediately stopped her mischievous attempt.

"I didn't let you tease me..."

Whereupon Kevin began to fuck Sarah with even more effort, her hands dropped and she clung to Kevin losing her balance. Kevin carried her to the bed and lay on it letting gravity do all the work for her. Everything in his mind was jumbled. He was aware of himself as Kevin, but it no longer felt wrong to him. Throwing everything away, home, family, human relationships and morals. If it weren't for Sarah, if she were a little stronger and she didn't love Kevin no matter how self-righteous a fool he was. Maybe all this wouldn't have happened, and they would have lived a quiet life, but in their own twisted way. Now in the dark room of the dark mansion, two opposites were sleeping together. Demon and Angel, Black and White, Good and Evil. With one caveat: the good gave itself voluntarily to the evil. The only reminder that there were two ordinary people here were the clothes of a man and a woman scattered around the room.

To cement their image, they continued to have unrestrained sex all night.