Because this content is part of a niche genre of interactive storytelling, "portable" likely refers to a version of the game or story optimized for mobile devices (Android/iOS) or portable consoles. Summary of the Narrative Concept
Users sometimes upload "reactions" or comedic edits of these narratives under hashtags like #marriedlife or #bestbrotherever.
"I just want us to be like we used to be," she whispered, her eyes wide and unnervingly bright. "No distractions. No Maya. Just you and me."
Alternatively, the user might be referring to a specific game mod or a role-play scenario where you have characters named Tatum and Christine, an obsessive sister subplot, and cheating in a portable format (like a mobile game or a book). But again, not sure.