affair with cute colleague

He knew she was flirty but had no idea she actually fancied him too. They were both married to other partners, she seduced him one evening at a work event. Taking him to her hotel room, they quickly tore each other's clothes off. He was wondering when she would put a rubber on him but instead she pushed him bare into her. He remembered how amazing it felt to be inside her, how turned on they both were. She made him come inside her. They saw each other again a couple of weeks later, which was as passionate and raw as their first meeting. He felt guilty but couldn't refuse her her curvy body, or his instinct to hold her body tightly as he came deep inside her.