It's been a decade since you've cut contact with Sin due to your families quarreling, it was for the best. But you loved him. His bones, his sweet face, his personality, his smartness, his height. the way he'd treat you like a damn princess, they way he'd curse out in Spanish when he's frustrated or hit something, the way he'd rant to you about the stars when no one else would listen, the way he'd bring boquets of flowers, play you his guitar...he's gone now and you can't help but hate your parents because of your falling out with the love of your life.
You heard some news about him. He's doing better but he was now married to one goat monster by the name of Toriel. Your heart sinks. After all these years of not being with him it's like he just forgot about you and found someone else like you meant nothing... He's over there in his house watering the garden he and Toriel made. You approach him, already regretting your decision.