Can’t Win Me Back by Ginger Sue

"At first, Lyse started having suspicion of Betty's lack of resemblance to Dad, but she kept it to herself without digging deeper into it.
"It wasn't until Betty showed her true color and hurt Lauren that Lyse started questioning the difference in character between the two sisters. She then decided to run a paternity test, and the result proved her right." Jasper looked at Alyssa affectionately.
He added flatly, "Lyse understood it was a huge deal. She repeatedly reminded me to deal with the matter prudently without making it public.
"It was me who decided to reveal the news at the press conference. She had nothing to do with it.
Grandpa, please don't blame her."
Newton's heart swelled when he learned the truth. He glanced at Alyssa with gratitude. "Alice, you've been a great help to our family. I can't possibly blame her for anything. In fact, I need to compliment her. Don't mistake me for your fool of a father."
Javier clenched his fists. Feelings of shame bubbled in his chest. He couldn't believe that he had been blind to an obvious fact that even outsiders could discern.
At that moment, Rory knocked on the door and entered. "Mr. Javier, we found the doctor who performed the paternity test for Sophia Kirkman years ago. He's waiting outside."
Javier was about to leave the room with gritted teeth when Newton said sternly, "Get that son of the bitch in here! I want to meet him."
Javier was reluctant to address the matter in front of Jasper and Alyssa, not after all the humiliation he had endured. Still, he had no choice but to respect
Newton's request and make Rory get the doctor.
An old and frail man was forced into the room under the intimidation of the bodyguards. Before Newton could even utter a word, the old doctor fearfully blurted out the truth about the falsification of the paternity test result he had performed for Sophia. He did so in exchange for money to settle his gambling debts.
Unfortunately, the doctor's frustrating and abominable confession did not feel cathartic for the victims, as Sophia was already dead.
"Whose child was Betty Beckett? Who's Sophia's lover?" Glaring at the doctor, Javier grabbed him by the collar.
"I... I have no idea!" Fearing that Javier might hurt him, the old doctor tried his best to recall his memories. Under the pressure, he managed to think of something. His eyes twinkled. "I remember something! Sophia came to me with a man by her side.
"I don't know if the child was his, but I accidentally ran into the man kissing her. I heard her calling him. Ron? Yes! She called him Ron. Other than that, I knew nothing."
"I know who that is." Looking stern, Alyssa offered, "The man is called Ronald Branson, an ex-colleague of Sophia's at the same TV network, where he was the action director in the filming crew."
"Where is he now?" Anger rolled through Javier, who looked murderous.
"He's serving a jail sentence." Alyssa held Jasper's calloused hand, feeling a heartache when she recalled the painful events from the past. "He had once attempted to murder Lyla under Sophia's orders.
"Thankfully, Jasper arrived in time to save Lyla's life, but Ronald Branson hit him on the head with a stick, which led to grave injuries. I had to perform a craniotomy on him."