Blue and Red had been friends for about a year or so. But when they first met,something inside of both of them sparked. Red was not sure what it was, neither did Blue know. But soon it had become obvious to both. What do you think it is? What will they do with these feelings stored inside. I think you know, but let's let them figure it out. My first fanfic, written in a phone so it's going to be hard. Romantic fanfic about underfell sans and underswap sans. My new otp, will be fluff. But if I feel it would be needed, I may put smut. But I never wrote that before so let's see how it goes. Onwards to the story.