Mon-El: You know, Lena and I have a lot in common. We both have been betrayed by our own families. And when the people who are supposed to love you the most let you down, it just makes you feel so, so vulnerable, you know? But my mother and the Luthor's, they betrayed Lena for their own selfish reasons, they, they wanted to take advantage of her. You lied to protect her. Because she's your friend. And I know Lena's hurting right now, but once she understands that, she'll forgive you.
Kara: I hope you're right. But I don't think I'll ever be able to forgive myself.
Mon-El: You know that it's okay to mess up, right? No matter how many mistakes I've made, you have always forgiven me. You should know that you deserve the same compassion that you show others.