I discovered my best friend's mother registered under the name "Michiko" on a dating app. When I sent her a message under the pseudonym "Shingo," she sent me a selfie showing off her huge breasts, which made me masturbate to it. "Hey, when will we meet?" "Michiko" asked me, and I decided to meet her, knowing that my face would be revealed. She said she wanted to continue our relationship under the registered name "Michiko" and "Shingo," and we decided to have a relationship where I would cum inside her whenever it was convenient, without her beloved son (my best friend) knowing.