Spike is in love with Rarity. Rarity just showed up to the pool party in the tiniest bikini he had ever seen. Spike got a massive erection and then felt incredibly guilty about it so hid in the bathroom. Rainbow Dash needed to pee, and saw that her friend needed some ‘help’. So she ‘helped’ him. Good news, Spike is grateful to his Strictly Platonic Friend (but with Benefits now) and feels better about the situation. Bad news, Rainbow secretly has a big fat crush on him. Unrequited Love and Sex are a good mix, right?

/x/x/x/

Rainbow X Spike vs Spike X Rarity

AU: all sapient characters are humans in the human world, sunset is from the horse dimension, otherwise the worldbuilding doesn’t really matter