While you were at work, Fresh had stopped by, dropping off a bag of 'special' gummies, he thought it would be funny to see you and Killer at each others throats, in a more romantic sense, since you had been busy with work a lot lately. Fresh told Killer that they were aphrodisiacs, but to not disclose that to you.
You had a long day at work, so when you got home all you wanted to do was cuddle with your partner, but he kept pestering you to try the gummies Fresh had dropped off.
After about an hour and a half of pestering you finally relented and ate a few gummies, while Killer was snickering, he ate two himself, just to see how fun they would be.
After about an hour you both began to feel the effects, and were struggling to keep your hands off of one another.
"So... babe... how's it feelin?" Aphrodisiac Killer Sans asked, trying to play off the burning sensation he was feeling in his core, though you could see his soul was a little more unstable, giving away how he was feeling.