After Rebirth, My Sister Who Fell in Love Regretted It

My sister wanted to jump off a building because her boyfriend broke up with her. I tried to persuade her for three hours but to no avail. Her boyfriend just said "I was wrong" and asked her to come down. The next day her boyfriend married Bai Yueguang, who was dying of cancer. My sister immediately stabbed me seven times, hitting my vital parts directly. "If you hadn't persuaded me, I would have jumped into the river and died!" "How can a living person compete with a dead person?" "It's me he should marry!" In my new life, I decisively pushed her to get married to her boyfriend smoothly. She regretted it.