Looking for a lost story that was about a boy who was dating a girl throughout highschool who was also his neightbor but then she cheats with his friend and his girlfriend which sends the mc into a spiral where he leaves and ends up moving in with an older woman he thinks of as a grandma, eventually she dies and he ends up in a poly relationship with a few different girls. Meanwhile his original girlfriend is pregnant with his baby.
I know i know its a lot to ask but i remember finding the story in one of the cheating wives/girlfriend threads but i can't seem to find it on SoL.