How'd he do that? A sex Mod on SSE before Fallout 4 ! Kinda' like AP but with better animations.
Heck, there's even a Beta FNIS in SSE .
While SSE is "different" the vanilla Skyrim and similar to Fallout 4, it is still a lot closer to vanilla Skyrim than it is to Fallout 4. That's how or why a mod like that has come out for SSE already.
That's also one of the reasons why the makers of SKSE and FASE have been working on SKSE for SSE over F4SE for Fallout 4, because they are hoping to see some patterns they will make it easier to script F4SE for Fallout 4.
At least, that's what I've been able to gather from reading around. But I could be completely wrong about that.
Agreed, I only mentioned the mod cause' maybe someone might help the author port it to F4 .