Wei Wuxian accepts that tongue, groaning against his mouth. There is something oddly familiar about the kiss but it could have been just because of how he had kissed him that night after Yi City. He did regret his actions then because of how Lan Wangji had reacted to what he did. But there is something else about this that seems familiar as if he had been the one on a receiving end of a kiss like this before. Certainly he hadn't...Or..has he? If his brain wasn't so distracted by the feeling of Lan Wangji on top of him and the lust in his body perhaps he could figure it out. That moment on the mountain was a lifetime ago but his mind is stirring with memories.

He doesn't know if he will have any regrets after all of this except perhaps because he will feel like he forced the other into it. Not that it seems that way with how Lan Wangji is kissing him at that moment.