Tatum Christine - Obsessive Sister Makes You Cheat Portable -

This sounds like a specific storyline or audio roleplay (often found on platforms like YouTube or TikTok) featuring a character named — typically in a POV or dark romance context. The premise “obsessive sister makes you cheat” suggests a tense dynamic where the listener/reader is in a relationship, but Tatum (as the obsessive sister) manipulates or forces a situation that leads to infidelity.