As much i like the idea of these two together, its just a dream in the darkest corner of an alt reality from we are now. Still i like it, maybe not quite the hardcore sex part, but more about how a young kid look up the love in life and maybe his eye are not in the right place with Rarity, but i think that in the best case, they will be friends and Rarity will help Spike to find the one for him. They deserve more love from this comunity. I dont know whats happening with blender, the quality its lower than the average.  
If you like it i can make more :)