Tristan was a person who often took time out of his day to introspect. A habit that helped him see himself objectively. Letting him accept and discards notions about himself. Through introspection, Tristan had once come to the realization that he did not have an addictive personality.
Now as he was introspecting yet again. He realized that what he had always believed to be a fact about himself was wrong. It had merely been an assumption and a wrong one at that. It was not that Tristan did not have an addictive personality. He had just never found anything worth getting addicted to, be it alcohol, drugs, adrenaline. Those things had never held any allure for him. But now Tristan had found the one thing that even if it were to bring him to his knees...as it had several times, he would not mind. And that was sex. Not just any sex either, but sex with his wife, Ariel.