Three years ago, Adrian Reyes was ready to marry the love of his life, Elena Cruz. Venue was booked, suit was ready, 150 guests were seated. But Elena never walked down the aisle. She left only a letter: "I can't do this. I'm not meant to be a wife."Adrian was destroyed. He left San Miguel and built a wall around his heart.Three years later, his father calls him home. Roberto Reyes, 48 years old, a matipuno, makisig, billionaire CEO who looks more like a movie star than a father. After a mild heart attack, he found love again with his private nurse - a beautiful, kind woman who brought life back into his empty mansion.He married her in a small City Hall ceremony."Dinner on Sunday, son. I want you to meet your new mother."Adrian comes home expecting a stranger.He opens the door and sees her - standing by the fireplace in the same floral dress he still remembers.Elena.His ex-fiancee, who left him at the altar, is now wearing his father's wedding ring.And his father, smiling proudly, says:"Adrian, this is Elena, my wife. Your stepmother."From that moment, their lives become a beautiful lie.Elena swears she didn't know Roberto was Adrian's father. She married Roberto as a contract marriage - to pay for her mother's dialysis. Roberto needed a companion. Elena needed money. It was supposed to be one year, no love, no touch.But fate is cruel.Elena sleeps in the guest room - right across from Adrian's old room. Every night, Adrian hears her crying through the thin wall. Every morning, he has to call the woman he still loves, "Mama."Roberto is not the villain. He is a lonely man who knows his son still loves Elena, but he also loves Elena in his own way. And he is hiding the biggest secret: He was the one who hid Elena's letter 3 years ago explaining why she really left.Now three people are trapped in one mansion:• A son who wants to hate his stepmother but still loves his ex-fiancee. • A stepmother who wants to be a good wife to her husband but can't forget her first love. • A father who wants to keep his family together, even if it means losing both of them. The question is: When you live in the same house, eat at the same table, and sleep under the same roof... how long can you pretend you don't love each other?And when the truth comes out - that Elena's marriage to Roberto was never real - who will Adrian choose to be?The son... or the lover?MY STEPMOTHER IS MY EX-FIANCEE is not about scandal. It's about second chances, forgiveness, and a love that was so strong, it had to come back even if it had to come back in the most forbidden way - as family.