It was just that Xu Xiangyang's self-control was relatively strong. He had his own goals and was afraid he would become addicted, so influenced by the moral education from society and school, he had worked hard to restrain himself from getting involved with such matters; when living under the same roof as Xing Jie, he still followed this logic.
And on that night after the sports meet had ended, the reason why Xu Xiangyang had acted so flustered was that his logic had been disrupted, and what he had to face was an unprecedented version of himself.
Fortunately, after a few days had passed, he gradually started getting used to it.
He learned to maintain a calm demeanor, so that while being with Xing Jie, he wouldn't get flustered and embarrassed like he did in the previous days, but the stone that had been weighing on Xu Xiangyang's heart still hadn't fallen.
The somewhat... problematic thoughts he had about Xing Jie made him doubt himself even more.