Man breaks up with girlfriend after she cheats on him. He goes to her house to pick up some stuff and runs into her mother there. They have sex.

[thisisnotnotnotmyrealname]

I remember a ton of little details but I haven't had any success searching with the site search tool or with google.

There is also a dildo of some kind modeled after the man's penis. The mother sees it and that's what sparks the conversation leading to them having sex. He leaves after cumming inside her then years later sees a picture on social media of the ex girlfriend, the mother, and a new young child.