Hey, all i can remember is that sesshoumaru is there at the birth of Kagome, which was one day after inuyasha's i believe, basically he falls in love with her, but someone makes a comment about her and inu being a couple and thus, he starts to hate the baby Inuyasha. It later describes life as they all grow up, and kagome and inuyasha end up getting married at school (a fake marrige) followed by a divorce.
Ok, so i remember quite a bit of the story, but it too much to write down.
Anywho, i belive this story might be a one-shot, but i could be wrong. If you know which one it is plz let me know, and thanks to everyone.