OK, they were teenagers, so he was a homosexual serial killer. There’s a very high proportion of them among serial killers.
Actually I don’t believe that is factual.
While there are serial killers that have killed young men and raped them/whatever, there are tons and tons of serial killers all over the world, and probably only some of them are homosexual. I’m just assuming here. I know there are a few high profile homosexual killers like gacy, dommer, corll, henley. But there are other killers too I just can’t think of names.
https://en.wikipedia.org/wiki/List_of_serial_killers_in_the_United_States
There’s a good list with the killers victim type. Some are sexual in nature, some aren’t. It’s a big list.