I thought I read a couple stories on this site at the end of 2017/2018. Was about these two roomate’s and one of them brings back his “friend” whose cum made people do what he say or something like that. That was the first part. Second story was how the first guy became “friends” with the guy who had addictive cum. Think had to do with him having sex with his GF at the time and him licking it out from her (used her to get him).
Not sure if that’s enough detail, I’ve tried searching for it but can’t find it. Wonder if it was deleted.