Lena, I need to tell you something. I've been wanting to countless times now, so many that it feels weird to actually do it. I wanted to on that plane when you were worried about me. I wanted to tell you you don't need to, everytime you stand in front of me, shielding, protecting. But, on that plane… You talked about Eve and how she had been betraying you, lying to you, for years. I couldn't tell you then. I didn't have the power. But you deserve to know, now and here. Now that we don't have any pressure on our backs for a brief moment. I wasn't going to get hurt that day. Nothing in there could have hurt me. Not even a nuclear explosion could. That day you tested me with your scanner, I broke it. I am an alien. You know I'm adopted. My original name was Kara Zor El. I am from Krypton. I lived there up to the age of thirteen. And now, on Earth, I am Supergirl. That's why I felt so hurt about the Kryptonite. And why I knew Mon El. We were in similar shoes. And why I never blamed you for sending him away. I had myself to blame. Your mother knows. She found out and sent people after me. But she thought it would hurt you more not to know. I now realise how foolish I was not to tell you right then. It was just never the right time. Currently, my identity is more important than ever. At one point, even Alex couldn't know. The president told me to reveal it. Many people, violent people are criticising me, attacking me. And those around me. But I trust you, Lena. I always have. You are my best friend. And I'd like to keep it that way.
I am very sorry about your brother. I tried to save him. He wouldn't let me.
I may have super hearing and X ray vision and heat vision, I may be able to fly and lift entire buildings without hurting myself and run at super speed, but you were always the stronger one. The smarter one. The one to go to when there was no way out, because you had one. You were always there for me, as Kara and as Supergirl. So thank you. I hope you can forgive me one day.