Other than the other processes and parts of sex, to make it spicier towards the end would be to cum in different somewhere else when you are already on the point of it. But when it comes to gay sex-they want to explore places more than the mouth and the ass to cum to. Let us face it, cumming inside the ass gets pretty boring, it is repetitive, and it is how straight people do it.
There many places one would cum to other than inside someone's ass.