It's only once...? Cheating sex in a kotatsu where your body reacts sensitively

It's a cold winter so I didn't go outside and drank at home. My boyfriend fell asleep in the warmth of Kotatsu. Even though she loves her boyfriend, her body is sensitive to her caresses. She is extremely excited about her boyfriend, who usually wears a condom and always wants a raw dick... Cheating sex becomes dark after suppressing her voice and inserting a different dick near her boyfriend